[ ], 2009 $[ ] [AMENDED AND RESTATED] 10% SENIOR SECURED DEBENTURE

Exhibit 10.53

THIS SECURITY HAS NOT BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY.

[                    ], 2009		$[                    ]

[AMENDED AND RESTATED]
10% SENIOR SECURED DEBENTURE

     THIS [AMENDED AND RESTATED] 10% SENIOR SECURED DEBENTURE is one of a series of duly authorized and issued 10% Senior Secured Debentures (the “Debentures”) of Intraop Medical Corporation, a Nevada corporation, having a principal place of business at 570 Del Rey Avenue, Sunnyvale, CA 94085 (the “Company”).

     FOR VALUE RECEIVED, the Company promises to pay to [                                        ], or its registered assigns (the “Holder”), to the extent not already repaid or converted in accordance with the terms hereof, the principal sum of $[                    ] on the earlier of (i) June 30, 2009 or (ii) the date the Company closes an issuance, or series of issuances, of promissory notes convertible into shares of its Common Stock with gross aggregate proceeds received by the Company of not less than $4,000,000, or such earlier date as this Debenture is required or permitted to be repaid as provided hereunder (the “Maturity Date”), and to pay interest to the Holder on the then outstanding principal amount of this Debenture in accordance with the provisions hereof. This Debenture is subject to the following additional provisions:

     Section 1. Definitions. For the purposes hereof, in addition to the terms defined elsewhere in this Debenture: (a) capitalized terms not otherwise defined herein have the meanings given to such terms in the Purchase Agreement, and (b) the following terms shall have the following meanings:

     “Business Day” means any day except Saturday, Sunday and any day which shall be a federal legal holiday in the United States or a day on which banking institutions in the State of New York are authorized or required by law or other government action to close.

     “California Courts” shall have the meaning set forth in Section 8(e).

     “Change of Control Transaction” means the occurrence after the date hereof of any of (i) an acquisition after the date hereof by an individual or legal entity or “group” (as described in Rule 13d-5(b)(1) promulgated under the Exchange Act), other than pursuant to the Transaction Documents, of effective control (whether through legal or beneficial ownership of capital stock of the Company, by contract or otherwise) of in excess of 40% of the voting securities of the Company, (ii) the Company merges into or consolidates with any other Person, or any Person merges into or consolidates with the Company and, after giving effect to such transaction, the stockholders of the Company immediately prior to such transaction own less than 60% of the aggregate voting power of the Company or the successor entity of such transaction, (iii) the Company sells or transfers its assets, as an entirety or substantially as an entirety, to another Person and the stockholders of the Company immediately prior to such transaction own less than 60% of the aggregate voting power of the acquiring entity immediately after the transaction, (iv) a replacement at one time or within a three year period of more than one-half of the members of the Company’s board of directors which is not approved by a majority of those individuals who are members of the board of directors on the date hereof (or by those individuals who are serving as members of the board of directors on any date whose nomination to the board of directors was approved by a majority of the members of the board of directors who are members on the date hereof), or (v) the execution by the Company of an agreement to which the Company is a party or by which it is bound, providing for any of the events set forth above in (i) or (iv).

     “Common Stock” means the common stock, par value $0.001 per share, of the Company and stock of any other class of securities into which such securities may hereafter have been reclassified or changed into.

     “Debenture Register” shall have the meaning set forth in Section 2(c).

     “Event of Default” shall have the meaning set forth in Section 7.

     “Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder.

     “Fundamental Transaction” shall mean (A) the Company effects any merger or consolidation of the Company with or into another Person, (B) the Company effects any sale of all or substantially all of its assets in one or a series of related transactions, (C) any tender offer or exchange offer (whether by the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to tender or exchange their shares for other securities, cash or property, or (D) the Company effects any reclassification of the Common Stock or any compulsory share exchange pursuant to which the Common Stock is effectively converted into or exchanged for other securities, cash or property.

     “Late Fees” shall have the meaning set forth in Section 2(d).

     “Monthly Payment Amount” shall mean the interest to be paid on each Monthly Payment Date in accordance with the terms of this Debenture.

     “Monthly Payment Date” means the last day of each month, commencing on the first such date after the Original Issue Date and ending upon June 30, 2009.

     “Original Issue Date” shall mean October 3, 2008.

     “Permitted Indebtedness” shall mean the individual and collective reference to the following: (a) up to, in the aggregate during the term of this Debenture, $2,000,000 of new Indebtedness, (b) Indebtedness incurred in connection with the Purchase Agreement, (c) Indebtedness existing on the date of the Purchase Agreement, (d) up to $6,000,000 in connection with the Company’s revolving inventory and sales contract financing agreement with E.U. Capital and (e) up to $1,040,000 of Indebtedness related to Mobetron S/N 28 to be placed under lease to a customer in Fort Meyers, Florida.

     “Permitted Lien” shall mean the individual and collective reference to the following: (a) Liens for taxes, assessments and other governmental charges or levies not yet due or Liens for taxes, assessments and other governmental charges or levies being contested in good faith and by appropriate proceedings for which adequate reserves (in the good faith judgment of the management of the Company) have been established in accordance with GAAP; (b) Liens imposed by law which were incurred in the ordinary course of business, such as carriers’, warehousemen’s and mechanics’ Liens, statutory landlords’ Liens, and other similar Liens arising in the ordinary course of business, and (x) which do not individually or in the aggregate materially detract from the value of such property or assets or materially impair the use thereof in the operation of the business of the Company or (y) which are being contested in good faith by appropriate proceedings, which proceedings have the effect of preventing the forfeiture or sale of the property or asset subject to such Lien; and (c) Liens on Receivables and the Company’s “inventory” (as such term is used in the Security Agreement) incurred solely in connection with a Permitted Indebtedness under clause (a), (d) and (e) of the definition of Permitted Indebtedness.

     “Person” means a corporation, an association, a partnership, organization, a business, an individual, a government or political subdivision thereof or a governmental agency.

     “Purchase Agreement” means the Debenture Purchase Agreement, dated as of September 30, 2008 and amended on or around the date hereof, to which the Company, the original Holder and other investors signatory thereto are parties, as further amended, modified or supplemented from time to time in accordance with its terms.

     “Trading Day” means a day on which the Common Stock is traded on a Trading Market.

     “Trading Market” means the following markets or exchanges on which the Common Stock is listed or quoted for trading on the date in question: the Nasdaq SmallCap Market, the American Stock Exchange, the New York Stock Exchange, the Nasdaq National Market or the OTC Bulletin Board.

     “Transaction Documents” shall have the meaning set forth in the Purchase Agreement.

     Section 2. Payments.

     a) Monthly Payment. On each Monthly Payment Date, the Company shall pay the Monthly Payment Amount.

     b) Balloon Payment. On the Maturity Date, all outstanding principal, plus accrued but unpaid interest thereon, plus all other outstanding amounts due to the Holder shall be paid to the Holder (except that, if such date is not a Business Day, then such payment shall be due on the next succeeding Business Day).

     c) Interest Calculations. Interest on the then outstanding principal amount of this Debenture shall accrue at the rate of 10% per annum, payable on the Monthly Payment Date and on the Maturity Date. Interest shall be calculated on the basis of a 360-day year and shall accrue daily commencing on the Original Issue Date until payment in full of the principal sum, together with all accrued and unpaid interest and other amounts which may become due hereunder, has been made. Interest hereunder will be paid to the Person in whose name this Debenture is registered on the records of the Company regarding registration and transfers of this Debenture (the “Debenture Register”).

     d) Late Fee. All overdue accrued and unpaid interest to be paid hereunder shall entail a late fee at the rate of 18% per annum (or such lower maximum amount of interest permitted to be charged under applicable law) (“Late Fees”) which will accrue daily, from the date such interest is due hereunder through and including the date of payment.

     e) Prepayment. The Company may prepay all or any portion of the principal amount of this Debenture without the prior written consent of the Holder at any time.

     Section 3. Conversion.

     a) Qualified Preferred Financing. In the event that (i) the Company closes an issuance, or series of issuances, of shares of its Preferred Stock (the “New Securities”) with gross aggregate proceeds received by the Company of not less than $1,000,000 (a “Qualified Preferred Financing”) and (ii) this Debenture has not been paid in full, then the entire outstanding principal balance and all unpaid accrued interest of this Debenture shall convert at the sole option of the Holder into the number of shares of the New

Securities at a conversion price equal to the price per share paid by the investors purchasing the New Securities (the “Conversion Price”) on the same terms and conditions as given to such investors.

     b) Hart-Scott-Rodino. Notwithstanding any provision to the contrary herein, this Debenture shall convert only (i) if no filing is required in connection with the conversion in order to comply with the Hart-Scott-Rodino Antitrust Improvements Act of 1976 (a “Required Filing”); (ii) after a Required Filing has been filed and upon the expiration or termination of any waiting period required in connection with such Required Filing; or (iii) with the prior written consent of the Holder (such prior written consent to specifically waive the provisions of this Section 3(b)).

     c) Conversion Procedures. Upon conversion of this Debenture pursuant to Section 3(a) above, the Holder shall surrender this Debenture, duly endorsed, at the principal office of the Company, and the Company shall, at its expense, upon receipt of this Debenture, duly endorsed, promptly deliver or cause to be delivered to the Holder a certificate or certificates (bearing such legends as may be required) representing that number of fully paid and non-assessable shares of New Securities into which this Debenture may be converted, and any other securities or property to which the Holder may be entitled to receive upon conversion of this Debenture, including a check payable to the Holder for fractional shares as described in Section 3(d) below. The conversion of this Debenture shall be deemed to have been made on the date of the closing of the Qualified Preferred Financing pursuant to Section 3(a) above and the Holder shall be treated for all purposes as the record holder of such shares of New Securities as of such date.

     d) Fractional Shares. No fractional shares shall be issued upon conversion of this Debenture. In lieu thereof, the Company shall pay to the Holder an amount in cash equal to the product obtained by multiplying the New Securities by the fraction of a share not issued upon such conversion.

     Section 4. Warrant Coverage.

     a) Issuance of Warrant. Concurrently with the issuance of this Debenture, the Company shall issue to the Holder (or an affiliate of the Holder designated in writing to the Company), a warrant (the “Warrant”) exercisable for the number of shares of the Company’s Common Stock as follows: twenty-five percent (25%) multiplied by the principal balance of this Debenture then outstanding, divided by (b) $0.028.

     b) Exercise Price. The exercise price of the Warrant shall be $0.028 per share.

     c) Agreement. The Company and the Holder, having adverse interests and as a result of arm’s length bargaining, agree that:

	i.		Neither the Holder nor any affiliate of the Holder has rendered any services to the Company in connection with this Debenture;
	ii.		The Warrants are not to be issued as compensation;
	iii.		The fair market value of this Debenture, if issued apart from the Warrant is $[                                        ], and the aggregate fair market value of the Warrant, if issued apart from this Debenture, is $[                                        ]; and
	iv.		All tax returns and other information return of the Company and the Holder relative to this Debenture and the Warrant issued pursuant hereto shall consistently reflect the matters agreed to in clauses (i) through (iii) above.

     Section 5. Registration of Transfers and Exchanges.

     a) Different Denominations. This Debenture is exchangeable for an equal aggregate principal amount of Debentures of different authorized denominations, as requested by the Holder surrendering the same. No service charge will be made for such registration of transfer or exchange; provided, however, the Company shall not be required to exchange this Debenture for denominations of less than the greater of $50,000 and the principal amount of this Debenture then outstanding. No service charge will be made for such registration of transfer or exchange.

     b) Investment Representations. This Debenture has been issued subject to certain investment representations of the original Holder set forth in the Purchase Agreement and may be transferred or exchanged only in compliance with the Purchase Agreement and applicable federal and state securities laws and regulations.

     c) Reliance on Debenture Register. Prior to due presentment to the Company for transfer of this Debenture, the Company and any agent of the Company may treat the Person in whose name this Debenture is duly registered on the Debenture Register as the owner hereof for the purpose of receiving payment as herein provided and for all other purposes, whether or not this Debenture is overdue, and neither the Company nor any such agent shall be affected by notice to the contrary.

Section 6. Negative Covenants. So long as any portion of this Debenture is outstanding, the Company will not directly or indirectly:

     a) other than Permitted Indebtedness, enter into, create, incur, assume, guarantee or suffer to exist any indebtedness for borrowed money of any kind, including but not limited to, a guarantee, on or with respect to any of its property or assets now owned or hereafter acquired or any interest therein or any income or profits therefrom;

     b) other than Permitted Liens, enter into, create, incur, assume or suffer to exist any liens of any kind, on or with respect to any of its property or assets now owned or hereafter acquired or any interest therein or any income or profits therefrom;

     c) amend its certificate of incorporation, bylaws or other charter documents so as to materially and adversely affect any rights of the Holder;

     d) repay, repurchase or offer to repay, repurchase or otherwise acquire more than a de minimis number of shares of its Common Stock or Common Stock Equivalents;

     e) enter into any agreement with respect to any of the foregoing; or

     f) pay cash dividends or distributions on any equity securities of the Company.

     Section 7. Events of Default.

     a) “Event of Default”, wherever used herein, means any one of the following events (whatever the reason and whether it shall be voluntary or involuntary or effected by operation of law or pursuant to any judgment, decree or order of any court, or any order, rule or regulation of any administrative or governmental body):

     i. any default in the payment of (A) the principal amount of any Debenture, or (B) interest (including Late Fees) on, or liquidated damages in respect of, any Debenture, as and when the same shall become due and payable (whether on the Maturity Date or by acceleration or otherwise) which default, solely in the case of an interest payment or other default under clause (B) above, is not cured, within 5 Trading Days;

     ii. the Company shall fail to observe or perform any other covenant or agreement contained in (A) this Debenture or (B) any of the other Transaction Documents, which failure is not cured, if possible to cure, within the earlier to occur of (A) 15 Trading Days after notice of such default sent by the Holder or by any other Holder and (B) 20 Trading Days after the Company shall become or should have become aware of such failure;

     iii. a default or event of default (subject to any grace or cure period provided for in the applicable agreement, document or instrument) shall occur under (A) any of the Transaction Documents or (B) any other material agreement, lease, document or instrument to which the Company is bound and which default or event of default could have a Material Adverse Effect on the Company;

     iv. any representation or warranty made herein or in any other Transaction Document shall be untrue or incorrect in any material respect as of the date when made or deemed made;

     v. (i) the Company shall commence a case, as debtor, under any applicable bankruptcy or insolvency laws as now or hereafter in effect or any successor thereto, or the Company commences any other proceeding under any reorganization, arrangement, adjustment of debt, relief of debtors, dissolution, insolvency or liquidation or similar law of any jurisdiction whether now or hereafter in effect relating to the Company thereof or (ii) there is commenced a case against the Company thereof, under any applicable bankruptcy or insolvency laws, as now or hereafter in effect or any successor thereto which remains undismissed for a period of 60 days; or (iii) the Company is adjudicated by a court of competent jurisdiction insolvent or bankrupt; or any order of relief or other order approving any such case or proceeding is entered; or (iv) the Company thereof suffers any appointment of any custodian or the like for it or any substantial part of its property which continues undischarged or unstayed for a period of 60 days; or (v) the Company thereof makes a general assignment for the benefit of creditors; or (vi) the Company shall fail to pay, or shall state that it is unable to pay, or shall be unable to pay, its debts generally as they become due; or (vii) the Company thereof shall call a meeting of its creditors with a view to arranging a composition, adjustment or restructuring of its debts; or (viii) the Company thereof shall by any act or failure to act expressly indicate its consent to, approval of or acquiescence in any of the foregoing; or (ix) any corporate or other action is taken by the Company thereof for the purpose of effecting any of the foregoing;

     vi. the Company shall default in any of its obligations under any mortgage, credit agreement or other facility, indenture agreement, factoring agreement or other instrument under which there may be issued, or by which there may be secured or evidenced any indebtedness for borrowed money or money due under any long term leasing or factoring arrangement of the Company in an amount exceeding $250,000, whether such indebtedness now exists or shall hereafter be created and such default shall result in such indebtedness becoming or being declared due and payable prior to the date on which it would otherwise become due and payable.

     vii. the Company shall be a party to any Change of Control Transaction or Fundamental Transaction, shall agree to sell or dispose of all or in excess of 33% of its assets in one or more transactions (whether or not such sale would constitute a Change of Control Transaction) or shall redeem or repurchase more than a de minimis number of its outstanding shares of Common Stock or other equity securities of the Company (other than repurchases of shares of Common Stock or other equity securities of departing officers and directors of the Company; provided such repurchases shall not exceed $250,000, in the aggregate, for all officers and directors during the term of this Debenture);

     viii. the Company shall redeem more than a de minimis number of Common Stock Equivalents; and

     ix. other than Permitted Liens, the Company shall fail, at any time, to have a perfected, first priority security interest in all Collateral (as defined in the Security Agreement) and all other assets pledged to Holder as security for the loan evidenced by this Debenture.

     b) Remedies Upon Event of Default. If any Event of Default occurs, the full principal amount of this Debenture, together with interest and other amounts owing in respect thereof, to the date of acceleration shall become, at the Holder’s election, immediately due and payable in cash. Commencing 5 days after the occurrence of any Event of Default that results in the eventual acceleration of this Debenture, the interest rate on this Debenture shall accrue at the rate of 18% per annum, or such lower maximum amount of interest permitted to be charged under applicable law. Upon the payment in full of all amounts owing under this Debenture the Holder shall promptly surrender this Debenture to or as directed by the Company. The Holder need not provide and the Company hereby waives any presentment, demand, protest or other notice of any kind, and the Holder may immediately and without expiration of any grace period enforce any and all of its rights and remedies hereunder and all other remedies available to it under applicable law. Such declaration may be rescinded and annulled by Holder at any time prior to payment hereunder and the Holder shall have all rights as a Debenture holder until such time, if any, as the full payment under this Section 7(b) shall have been received by it. No such rescission or annulment shall affect any subsequent Event of Default or impair any right consequent thereon.

     Section 8. Miscellaneous.

     a) Notices. Any and all notices or other communications or deliveries to be provided by the Holder hereunder, including, without limitation, any Notice of Conversion, shall be in writing and delivered personally, by facsimile, sent by a nationally recognized overnight courier service, addressed to the Company, at the address set forth above, Attn: Chief Financial Officer or such other address or facsimile number as the Company may specify for such purposes by notice to the Holder delivered in accordance with this Section 8(a). Any and all notices or other communications or deliveries to be provided by the Company hereunder shall be in writing and delivered personally, by facsimile, sent by a nationally recognized overnight courier service addressed to each Holder at the facsimile telephone number or address of such Holder appearing on the books of the Company, or if no such facsimile telephone number or address appears, at the principal place of business of the Holder. Any notice or other communication or deliveries hereunder shall be deemed given and effective on the earliest of (i) the date of transmission, if such notice or communication is delivered via facsimile at the facsimile telephone number specified in this Section 8(a) prior to 5:30 p.m. (New York City time), (ii) the date after the date of transmission, if such notice or communication is delivered via facsimile at the facsimile telephone number specified in this Section 8(a) later than 5:30 p.m. (New York City time) on any date and earlier than 11:59 p.m. (New York City time) on such date, (iii) the second Business Day following the date of mailing, if sent by nationally recognized overnight courier service, or (iv) upon actual receipt by the party to whom such notice is required to be given.

     b) Absolute Obligation. Except as expressly provided herein, no provision of this Debenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of, interest and liquidated damages (if any) on, this Debenture at the time, place, and rate, and in the coin or currency, herein prescribed. This Debenture is a direct debt obligation of the Company. This Debenture ranks pari passu with all other Debentures now or hereafter issued under the terms set forth herein.

     c) Security Interest. This Debenture is a direct debt obligation of the Company and, subject to Permitted Liens and pursuant to the Security Documents, is secured by a first priority security interest in all of the assets of the Company and certain other collateral for the benefit of the Holders.

     d) Lost or Mutilated Debenture. If this Debenture shall be mutilated, lost, stolen or destroyed, the Company shall execute and deliver, in exchange and substitution for and upon cancellation of a mutilated Debenture, or in lieu of or in substitution for a lost, stolen or destroyed Debenture, a new Debenture for the principal amount of this Debenture so mutilated, lost, stolen or destroyed but only upon receipt of evidence of such loss, theft or destruction of such Debenture, and of the ownership hereof, and indemnity, if requested, all reasonably satisfactory to the Company.

     e) Governing Law. All questions concerning the construction, validity, enforcement and interpretation of this Debenture shall be governed by and construed and enforced in accordance with the internal laws of the State of Delaware, without regard to the principles of conflicts of law thereof. Each party agrees that all legal proceedings concerning the interpretations, enforcement and defense of the transactions contemplated by any of the Transaction Documents (whether brought against a party hereto or its respective affiliates, directors, officers, shareholders, employees or agents) shall be commenced in the courts of the State of California located in Santa Clara County and the United States District Court for the Northern District of California (the “California Courts”). Each party hereto hereby irrevocably submits to the exclusive jurisdiction of the California Courts for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein (including with respect to the enforcement of any of the Transaction Documents), and hereby irrevocably waives, and agrees not to assert in any suit, action or proceeding, any claim that it is not personally subject to the jurisdiction of any such court, or such California Courts are improper or inconvenient venue for such proceeding. Each party hereby irrevocably waives personal service of process and consents to process being served in any such suit, action or proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of delivery) to such party at the address in effect for notices to it under this Debenture and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. Each party hereto hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Debenture or the transactions contemplated hereby. If either party shall commence an

action or proceeding to enforce any provisions of this Debenture, then the prevailing party in such action or proceeding shall be reimbursed by the other party for its attorneys fees and other costs and expenses incurred with the investigation, preparation and prosecution of such action or proceeding.

     f) Modification; Waiver. No modification or waiver of any provision of this Debenture or consent to departure therefrom shall be effective without the written consent of (i) the Company and (ii) the Holder. The failure of the Company or the Holder to insist upon strict adherence to any term of this Debenture on one or more occasions shall not be considered a waiver or deprive that party of the right thereafter to insist upon strict adherence to that term or any other term of this Debenture. Any waiver must be in writing.

     g) Severability. If any provision of this Debenture is invalid, illegal or unenforceable, the balance of this Debenture shall remain in effect, and if any provision is inapplicable to any person or circumstance, it shall nevertheless remain applicable to all other persons and circumstances. If it shall be found that any interest or other amount deemed interest due hereunder violates applicable laws governing usury, the applicable rate of interest due hereunder shall automatically be lowered to equal the maximum permitted rate of interest. The Company covenants (to the extent that it may lawfully do so) that it shall not at any time insist upon, plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay, extension or usury law or other law which would prohibit or forgive the Company from paying all or any portion of the principal of or interest on this Debenture as contemplated herein, wherever enacted, now or at any time hereafter in force, or which may affect the covenants or the performance of this indenture, and the Company (to the extent it may lawfully do so) hereby expressly waives all benefits or advantage of any such law, and covenants that it will not, by resort to any such law, hinder, delay or impeded the execution of any power herein granted to the Holder, but will suffer and permit the execution of every such as though no such law has been enacted.

     h) Next Business Day. Whenever any payment or other obligation hereunder shall be due on a day other than a Business Day, such payment shall be made on the next succeeding Business Day.

     i) Headings. The headings contained herein are for convenience only, do not constitute a part of this Debenture and shall not be deemed to limit or affect any of the provisions hereof.

     j) Usury. To the extent it may lawfully do so, the Company hereby agrees not to insist upon or plead or in any manner whatsoever claim, and will resist any and all efforts to be compelled to take the benefit or advantage of, usury laws wherever enacted, now or at any time hereafter in force, in connection with any claim, action or proceeding that may be brought by any Purchaser in order to enforce any right or remedy under any Transaction Document. Notwithstanding any provision to the contrary contained in any Transaction Document, it is expressly agreed and provided that the total liability of the

Company under the Transaction Documents for payments in the nature of interest shall not exceed the Maximum Rate, and, without limiting the foregoing, in no event shall any rate of interest or default interest, or both of them, when aggregated with any other sums in the nature of interest that the Company may be obligated to pay under the Transaction Documents exceed such Maximum Rate. It is agreed that if the maximum contract rate of interest allowed by law and applicable to the Transaction Documents is increased or decreased by statute or any official governmental action subsequent to the date hereof, the new maximum contract rate of interest allowed by law will be the Maximum Rate applicable to the Transaction Documents from the effective date of such increase or decrease forward, unless such application is precluded by applicable law. If under any circumstances whatsoever, interest in excess of the Maximum Rate is paid by the Company to any Purchaser with respect to indebtedness, if any, evidenced by the Transaction Documents, such excess shall be applied by such Purchaser to the unpaid principal balance of any such indebtedness or be refunded to the Company, the manner of handling such excess to be at such Purchaser’s election in the event any principal amount remains outstanding.

     k) Assumption. Any successor to the Company or surviving entity in a Fundamental Transaction shall (i) assume in writing all of the obligations of the Company under this Debenture and the other Transaction Documents pursuant to written agreements in form and substance satisfactory to the Holder (such approval not to be unreasonably withheld or delayed) prior to such Fundamental Transaction and (ii) to issue to the Holder a new debenture of such successor entity evidenced by a written instrument substantially similar in form and substance to this Debenture, including, without limitation, having a principal amount and interest rate equal to the principal amounts and the interest rates of the Debentures held by the Holder and having similar ranking to this Debenture, and satisfactory to the Holder (any such approval not to be unreasonably withheld or delayed). The provisions of this Section 8(k) shall apply similarly and equally to successive Fundamental Transactions and shall be applied without regard to any limitations of this Debenture.

     l) [Amended and Restated Debenture. This Debenture is issued in substitution and exchange for, and not in satisfaction or payment of, the 10% Senior Secured Debenture Due December 31, 2008, dated October 3, 2008, payable to the order of the Holder (the “Existing Debenture”), and the indebtedness originally evidenced by the Existing Debenture which is now evidenced by this Debenture shall be a continuing indebtedness, and nothing herein contained shall be construed to deem the Existing Debenture paid, or to release or terminate any lien given to secure the Existing Debenture, which liens shall continue to secure the indebtedness evidenced by this Debenture; provided that the Holder acknowledges that any default that may have existed on the Existing Debenture shall be deemed satisfied and waived upon the issuance of this Debenture.]

     IN WITNESS WHEREOF, the Company has caused this Debenture to be duly executed by a duly authorized officer as of the date first above indicated.