LIMITED WAIVER AND THIRD AMENDMENT TO THIRD AMENDED AND RESTATED CREDIT AGREEMENT

Exhibit 10.19

LIMITED WAIVER AND THIRD AMENDMENT TO THIRD AMENDED

AND RESTATED CREDIT AGREEMENT

This LIMITED WAIVER AND THIRD AMENDMENT TO THIRD AMENDED AND RESTATED CREDIT AGREEMENT, dated as of January 24, 2007 (this “Amendment”), is by and among SWITCH & DATA HOLDINGS, INC., a Delaware corporation (the “Borrower”), the financial institutions from time to time party to the Credit Agreement referred to below as Lenders, DEUTSCHE BANK AG NEW YORK BRANCH, as administrative agent (hereinafter, in such capacity, the “Administrative Agent”) for itself and the Lenders, CANADIAN IMPERIAL BANK OF COMMERCE and ROYAL BANK OF CANADA, as co-documentation agents (the “Co-Documentation Agents”), and CIT LENDING SERVICES CORPORATION and BNP PARIBAS, as co-syndication agents (the “Co-Syndication Agents”), amending certain provisions of the Third Amended and Restated Credit Agreement, dated as of October 13, 2005 (as amended, restated, supplemented or otherwise modified and in effect from time to time, the “Credit Agreement”), among the Borrower, the financial institutions party thereto from time to time as lenders (each individually a “Lender” and, collectively, the “Lenders”), the Administrative Agent, the Co-Syndication Agents and the Co-Documentation Agents. Terms used but not defined herein shall have the meanings ascribed to such terms in the Credit Agreement.

RECITALS

WHEREAS, Parent has made, or will be making, a public offering of the equity interests of Parent pursuant to an effective registration statement under the Securities Act of 1933 and, pursuant to such public offering, is in receipt of, or anticipates being in receipt of, Net Proceeds in an amount equal to $122,550,000 (the “Equity Issuance Net Proceeds Amount”);

WHEREAS, Borrower desires to apply up to $46,950,000 of such Equity Issuance Net Proceeds Amount (“Prepayment of Second Lien Debt Amount”) to (i) the prepayment of all of the “Term Loan” outstanding under the Second Lien Credit Agreement in an amount equal to $45,000,000, (ii) the payment of the prepayment premium due under Section 2.4.C of the Second Lien Credit Agreement in an amount equal to $450,000 and (iii) the payment of all accrued and unpaid interest and fees due to the Second Lien Administrative Agent and the Lenders under the Second Lien Credit Agreement in an amount not to exceed $1,500,000 in the aggregate and, concurrently with the application of such Prepayment of Second Lien Debt Amount as provided herein, to terminate the Second Lien Credit Agreement;

WHEREAS, pursuant to Section 2.7 of the Intercreditor Agreement, Borrower may make a mandatory prepayment of the “Term Loan” (as defined in the Second Lien Credit Agreement) under the Second Lien Credit Agreement from the Net Proceeds of an equity

issuance if the Required Lenders have waived the corresponding mandatory prepayment under the Credit Agreement;

WHEREAS, Borrower has requested to make, and the Administrative Agent and the Lenders have agreed, upon the terms and conditions set forth herein, to grant the Borrower a limited waiver in respect of the mandatory prepayments obligations set forth under Section 2.5 of the Credit Agreement to permit Borrower to make, on a one time basis, a mandatory prepayment under Section 2.4 of the Second Lien Credit Agreement;

WHEREAS, the Administrative Agent and the Lenders are willing to amend the Credit Agreement as provided herein.

NOW THEREFORE, in consideration of the mutual agreements contained in the Credit Agreement and herein and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows:

§1. Limited Waiver; Lender Consent.

(a) Effective as of the date hereof, upon satisfaction of the conditions precedent set forth in §3 hereof, and in reliance upon the representations and warranties of the Borrower Group set forth in the Credit Agreement and in this Amendment, the Administrative Agent and the Lenders hereby waive the requirement under Section 2.5(B)(iii)(a) of the Credit Agreement that the Net Proceeds in respect of any equity issuance shall be paid by Borrower to the Administrative Agent for the account of the Lenders for application to the Loans, provided that, (i) the foregoing limited waiver shall only apply to the Prepayment of Second Lien Debt Amount, (ii) such Prepayment of Second Lien Debt Amount shall be applied to the prepayment of the term loan and all other obligations outstanding under the Second Lien Credit Agreement on or before February 28, 2007, and (iii) the Second Lien Credit Agreement shall be terminated upon the application by the Second Lien Administrative Agent of the Second Lien Debt Amount to the obligations outstanding under the Second Lien Credit Agreement, and provided further that any Prepayment of Second Lien Debt Amount not applied as set forth hereinabove and any remaining Equity Issuance Net Proceeds Amount shall be applied as set forth in Section 2.5(B)(iii)(a) of the Credit Agreement. The foregoing is a limited waiver and the execution and delivery of this Amendment does not (a) constitute a waiver by the Administrative Agent or any Lender of any other term or condition under Credit Agreement or any other Loan Document, and of any right, power or remedy of the Administrative Agent or any Lender under any of the Loan Documents (all such rights, powers and remedies being expressly reserved), (b) establish a custom or a course of dealing or conduct among the Administrative Agent, any Lender, any member of the Borrower Group and the Borrower, or (c) prejudice any rights which any Lender or the Administrative Agent now has or may have in the future under or in connection with the Loan Documents.

(b) The Lenders hereby further authorize the Administrative Agent, on behalf of and for the benefit of the Lenders, to enter into or consent to any amendment, modification, termination or waiver of any provision of the Intercreditor Agreement necessary or desirable

in the reasonable opinion of the Administrative Agent to prepay the term loan and all other outstanding obligations under the Second Lien Credit Agreement as set forth paragraph (a) above without any further written authorization or consent from the Lenders.

§2. Amendment to Section 5.1 of the Credit Agreement. Upon the payment in full of the obligations under the Second Lien Credit Agreement and termination of the Second Lien Credit Agreement and all other Second Lien Collateral Documents as provided in Section 1 above, Section 5.1 of the Credit Agreement shall be amended by deleting in its entirety paragraph (i) (“Monthly Financials”) therein and substituting therefor “[Intentionally Omitted]”.

§3. Conditions Precedent. This Amendment shall become effective upon the satisfaction of each of the following conditions precedent:

(a) Each of the Borrower, the Lenders and the Administrative Agent shall have duly executed and delivered a counterpart signature page to this Amendment to the Administrative Agent;

(b) Each of the Guarantors shall have duly executed and delivered a counterpart signature page to the Ratification of Guaranty attached to this Amendment to the Administrative Agent;

(c) The Borrower shall pay in cash to the Administrative Agent, for the pro rata accounts of the Lenders executing and delivering a signature page to this Amendment, an amendment fee in an amount equal to five one-hundredths of one percent (0.05%) of the Commitments of such Lenders; and

(d) The Borrower shall have paid all unpaid fees and expenses of the Administrative Agent’s counsel, ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ LLP, to the extent that copies of invoices for such fees and expenses have been delivered to the Borrower.

§4. Representations and Warranties. The Borrower hereby represents and warrants to the Administrative Agent and the Lenders as follows:

(a) Representations and Warranties. The representations and warranties of the Borrower contained in the Credit Agreement and the other Loan Documents were true and correct in all material respects as of the date when made and continue to be true and correct in all material respects on the date hereof, except to the extent of changes resulting from transactions or events contemplated by the Credit Agreement and the other Loan Documents or to the extent that such representations and warranties relate expressly to an earlier date.

(b) Ratification, Etc. Except as expressly amended hereby, the Credit Agreement and the other Loan Documents, and all documents, instruments and agreements related thereto, are hereby ratified and confirmed in all respects and shall continue in full force and effect. The Credit Agreement shall, together with this Amendment, be read and construed as a single agreement. All references to the Credit Agreement in the Credit Agreement, the

Loan Documents or any related agreement or instrument shall hereafter refer to the Credit Agreement as amended hereby.

(c) Authority, Etc. The execution and delivery by the Borrower of this Amendment and the performance by the Borrower of all of its agreements and obligations under the Credit Agreement as amended hereby and the other Loan Documents are within the corporate authority of the Borrower and have been duly authorized by all necessary corporate action on the part of the Borrower.

(d) Enforceability of Obligations. This Amendment, the Credit Agreement as amended hereby and the other Loan Documents constitute the legal, valid and binding obligations of the Borrower enforceable against the Borrower in accordance with their terms, except as enforceability is limited by bankruptcy, insolvency, reorganization, moratorium or other laws relating to or affecting generally the enforcement of, creditors’ rights and except to the extent that availability of the remedy of specific performance or injunctive relief is subject to the discretion of the court before which any proceeding therefor may be brought.

(e) No Default. No Potential Event of Default or Event of Default has occurred and is continuing, and no Potential Event of Default or Event of Default will exist after execution and delivery of this Amendment.

§5. Ratification of Existing Agreements. The Borrower agrees that the Obligations are, except as otherwise expressly modified in this Amendment upon the terms set forth herein, ratified and confirmed in all respects. In addition, by the execution of this Amendment, the Borrower represents and warrants that no counterclaim, right of set-off or defense of any kind exists or is outstanding with respect to such Obligations.

§6. No Other Amendments. Except as expressly provided in this Amendment, all of the terms and conditions of the Credit Agreement and the other Loan Documents remain in full force and effect. Nothing contained in this Amendment shall (a) be construed to imply a willingness on the part of the Administrative Agent or the Lenders to grant any similar or other future amendment of any of the terms and conditions of the Credit Agreement or the other Loan Documents or (b) in any way prejudice, impair or effect any rights or remedies of the Administrative Agent or the Lenders under the Credit Agreement or the other Loan Documents.

§7. Release. In order to induce the Administrative Agent and the Lenders to enter into this Amendment, the Borrower acknowledges and agrees that: (i) the Borrower does not have any claim or cause of action against the Administrative Agent or any Lender (or any of their respective directors, officers, employees or agent); (ii) the Borrower does not have any offset right, counterclaim, right of recoupment or any defense of any kind against the Borrower’s obligations, indebtedness or liabilities to the Administrative Agent or any Lender; and (iii) each of the Administrative Agent and the Lenders has heretofore properly performed and satisfied in a timely manner all of its obligations to the Borrower. The Borrower wishes to eliminate any possibility that any past conditions, acts, omissions, events, circumstances or matters would impair or otherwise adversely affect any of the Administrative Agent’s and the Lenders’ rights, interests, contracts, collateral security or remedies. Therefore, the Borrower unconditionally

releases, waives and forever discharges (A) any and all liabilities, obligations, duties, promises or indebtedness of any kind of the Administrative Agent or any Lender to the Borrower, except the obligations to be performed by the Administrative Agent or any Lender on or after the date hereof as expressly stated in this Amendment, the Credit Agreement and the other Loan Documents, and (B) all claims, offsets, causes of action, right of recoupment, suits or defenses of any kind whatsoever (if any), whether arising at law or in equity, whether known or unknown, which the Borrower might otherwise have against the Administrative Agent, any Lender or any of their respective directors, officers, employees or agents, in either case (A) or (B), on account of any past or presently existing condition, act, omission, event, contract, liability, obligation, indebtedness, claim, cause of action, defense, circumstance or matter of any kind.

§8. Execution in Counterparts. This Amendment may be executed in any number of counterparts, each of which shall be deemed an original, but which together shall constitute one instrument. In proving this Amendment, it shall not be necessary to produce or account for more than one such counterpart signed by the party against whom enforcement is sought.

§9. Expenses. Pursuant to §9.2 of the Credit Agreement, all costs and expenses incurred or sustained by the Administrative Agent in connection with this Amendment, including the fees and disbursements of legal counsel for the Administrative Agent in producing, reproducing and negotiating the Amendment, will be for the account of the Borrower whether or not the transactions contemplated by this Amendment are consummated.

§10. Governing Law; Entire Agreement. THIS AMENDMENT SHALL BE GOVERNED BY, AND SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO CHOICE OF LAWS AND CONFLICTS OF LAWS PRINCIPLES (OTHER THAN SECTION 5-1401 AND SECTION 5-1402 OF THE GENERAL OBLIGATIONS LAW OF THE STATE OF NEW YORK). The captions in this Amendment are for convenience of reference only and shall not define or limit the provisions hereof. This Amendment shall be a “Loan Document” under and as defined in the Credit Agreement.

§11. Consent to Jurisdiction and Service of Process. All judicial proceedings brought against any party hereto arising out of or relating to this Amendment or any other Loan Document, or any obligations thereunder, may be brought in any state or federal court of competent jurisdiction in the State, County and City of New York. By executing and delivering this Amendment, each party irrevocably:

(i) accepts generally and unconditionally the nonexclusive jurisdiction and venue of such courts;

(ii) waives any defense of forum non conveniens;

(iii) agrees that service of all process in any such proceeding in any such court may be made by registered or certified mail, return receipt requested, to its address provided in accordance with Section 9.8 of the Credit Agreement or an Assignment Agreement;

(iv) with respect to the Borrower, agrees that service as provided in clause (iii) above is sufficient to confer personal jurisdiction over the Borrower in any such

proceeding in any such court, and otherwise constitutes effective and binding service in every respect;

(v) with respect to the Borrower, agrees that Lenders retain the right to serve process in any other manner permitted by law or to bring proceedings against the Borrower in the courts of any other jurisdiction; and

(vi) agrees that the provisions of this Section 10 relating to jurisdiction and venue shall be binding and enforceable to the fullest extent permissible under New York General Obligations Law Section 5-1402 or otherwise.

§12. Waiver of Jury Trial. EACH OF THE PARTIES TO THIS AMENDMENT HEREBY AGREES TO WAIVE ITS RESPECTIVE RIGHTS TO A JURY TRIAL OF ANY CLAIM OR CAUSE OF ACTION BASED UPON OR ARISING OUT OF THIS AMENDMENT OR ANY OF THE OTHER LOAN DOCUMENTS OR ANY DEALINGS BETWEEN THEM RELATING TO THE SUBJECT MATTER OF THIS LOAN TRANSACTION OR THE LENDER/BORROWER RELATIONSHIP THAT IS BEING ESTABLISHED. The scope of this waiver is intended to be all-encompassing of any and all disputes that may be filed in any court and that relate to the subject matter of this transaction, including contract claims, tort claims, breach of duty claims and all other common law and statutory claims. Each party hereto acknowledges that this waiver is a material inducement to enter into a business relationship, that each has already relied on this waiver in entering into this Amendment, and that each will continue to rely on this waiver in their related future dealings. Each party hereto further warrants and represents that it has reviewed this waiver with its legal counsel and that it knowingly and voluntarily waives its jury trial rights following consultation with legal counsel. THIS WAIVER IS IRREVOCABLE, MEANING THAT IT MAY NOT BE MODIFIED EITHER ORALLY OR IN WRITING (OTHER THAN BY A MUTUAL WRITTEN WAIVER SPECIFICALLY REFERRING TO THIS SECTION 12 AND EXECUTED BY EACH OF THE PARTIES HERETO), AND THIS WAIVER SHALL APPLY TO ANY SUBSEQUENT AMENDMENTS, RENEWALS, SUPPLEMENTS OR MODIFICATIONS TO THIS AMENDMENT OR ANY OF THE OTHER LOAN DOCUMENTS OR TO ANY OTHER DOCUMENTS OR AGREEMENTS RELATING TO THE LOANS MADE UNDER THE CREDIT AGREEMENT. In the event of litigation, this Amendment may be filed as a written consent to a trial by the court.

[THE REMAINDER OF THIS PAGE IS INTENTIONALLY LEFT BLANK]

IN WITNESS WHEREOF, the parties hereto have executed this Amendment as a document under seal as of the date first above written.


Borrower: SWITCH & DATA HOLDINGS, INC.

By:	/s/ ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇, ▇▇.
	Name:	▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇, ▇▇.
	Title:

***Signature Page to Limited Waiver and Third Amendment to Third Amended and Restated Credit Agreement***


Administrative Agent and Lender: DEUTSCHE BANK AG NEW YORK BRANCH

By:	/s/ ▇▇▇▇ ▇▇▇▇▇▇
	Name:	▇▇▇▇ ▇▇▇▇▇▇
	Title:	Director

By:	/s/ Seottye ▇▇▇▇▇▇▇
	Name:	Seottye ▇▇▇▇▇▇▇
	Title:	Director

***Signature Page to Limited Waiver and Third Amendment to Third Amended and Restated Credit Agreement***


Co-Syndication Agent and Lender: CIT LENDING SERVICES CORPORATION

By:	/s/ ▇▇▇▇▇▇ ▇▇▇▇▇
	Name:	▇▇▇▇▇▇ ▇▇▇▇▇
	Title: Vice President

***Signature Page to Limited Waiver and Third Amendment to Third Amended and Restated Credit Agreement***


Co-Syndication Agent and Lender: BNP PARIBAS

By:	/s/ ▇▇▇ ▇▇▇▇▇▇▇▇▇
	Name: ▇▇▇ ▇▇▇▇▇▇▇▇▇
	Title: Director

By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇
	Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇
	Title:	Director

***Signature Page to Limited Waiver and Third Amendment to Third Amended and Restated Credit Agreement***


Co-Documentation Agent and Lender: CANADIAN IMPERIAL BANK OF COMMERCE

By:		/s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇
		Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇
		Title: Authorized Signatory

***Signature Page to Limited Waiver and Third Amendment to Third Amended and Restated Credit Agreement***


Co-Documentation Agent and Lender: ROYAL BANK OF CANADA

By:		/s/ ▇▇▇▇ ▇▇▇▇▇▇
		Name: ▇▇▇▇ ▇▇▇▇▇▇
		Title: Authorized Signatory

***Signature Page to Limited Waiver and Third Amendment to Third Amended and Restated Credit Agreement***


Lenders: FriedbergMilstein Private Capital Fund I

By:		/s/ ▇▇▇▇ ▇▇▇▇▇
		Name: ▇▇▇▇ ▇▇▇▇▇
		Title: Senior Partner

***Signature Page to Limited Waiver and Third Amendment to Third Amended and Restated Credit Agreement***


Lenders: FriedbergMilstein Leveraged Capital Fund I

By:		/s/ ▇▇▇▇ ▇▇▇▇▇
		Name: ▇▇▇▇ ▇▇▇▇▇
		Title: Senior Partner

***Signature Page to Limited Waiver and Third Amendment to Third Amended and Restated Credit Agreement***


Lenders: GSCP (NJ), L.P., on behalf of each of the following funds, in its capacity as Collateral Manager: GSC PARTNERS CDO FUND II, LIMITED GSC PARTNERS CDO FUND III, LIMITED GSC PARTNERS CDO FUND IV, LIMITED GSC PARTNERS CDO FUND VII, LIMITED

By:		/s/ ▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇▇
		Name: ▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇▇
		Title: Managing Director