**Exhibit 34.2**

**REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM**

Discover Financial Services LLC

We have examined management’s assertion, included in the accompanying Management’s Assertion on Compliance with Regulation ABCriteria, that Discover Financial Services LLC (DFS) complied with the servicing criteria set forth in Item 1122(d) of the Securities and Exchange Commission’s Regulation AB for the Asset-Backed Securities transactions involving creditcard receivables conducted by Discover Card Master Trust I and Discover Card Execution Note Trust (the “Platform”) as of and for the year ended November 30, 2009, excluding the criteria set forth in Items 1122 (d)(1) (i), (d)(1)(iii),(d)(1)(iv), (d)(2)(ii), (d)(2)(iii), (d)(2)(iv), (d)(2)(v), (d)(2)(vi), (d)(2)(vii), (d)(3)(i), (d)(3)(ii), (d)(3)(iii), (d)(3)(iv), (d)(4)(i), (d)(4)(ii), (d)(4)(iii), (d)(4)(v), (d)(4)(x), (d)(4)(xi), (d)(4)(xii), (d)(4)(xiii), and (d)(4)(xv),which management has determined are not applicable to the activities performed by DFS with respect to the Platform. Appendix A to management’s assertion identifies the individual asset backed-transactions defined by management as constitutingthe Platform. Management is responsible for DFS’s compliance with the servicing criteria. Our responsibility is to express an opinion on management’s assertion about DFS’s compliance with the servicing criteria based on ourexamination. 

Our examination was conducted in accordance with attestation standards issued by the American Institute of Certified PublicAccountants, as adopted by the Public Company Accounting Oversight Board (United States) and, accordingly, included examining, on a test basis, evidence about the DFS’s compliance with the applicable servicing criteria, including tests on asample basis of the servicing activities related to the Platform, determining whether DFS performed those selected activities in compliance with the servicing criteria during the specified period, and performing such other procedures as weconsidered necessary in the circumstances. Our procedures were limited to selected servicing activities performed by DFS during the period covered by this report and accordingly, such samples may not have included servicing activities related toeach asset-backed transaction included in the Platform. Further, an examination is not designed to detect noncompliance arising from errors that may have occurred prior to the period specified above that may have affected the balances or amountscalculated or reported by DFS during the period covered by this report. We believe that our examination provides a reasonable basis for our opinion. Our examination does not provide a legal determination on DFS’s compliance with the servicingcriteria. 

As described in management’s assertion, for servicing criteria 1122(d)(2)(i), 1122(d)(4)(iv), 1122(d)(4)(vii) and1122(d)(4)(viii), DFS has engaged vendors to perform certain activities required by this servicing criteria. DFS has determined that these vendors are not considered a “servicer” as defined in Item 1101(j) of Regulation AB, and DFShas elected to take responsibility for assessing compliance with the servicing criteria applicable to these vendors as permitted by Interpretation 17.06 of the SEC Division of Corporation Finance Manual of Publicly Available TelephoneInterpretations (Interpretation 17.06). As permitted by Interpretation 17.06, DFS has asserted that it has policies and procedures in place designed to provide reasonable assurance that the vendors’ activities comply in all material respectswith the servicing criteria applicable to these vendors. DFS is solely responsible for determining that it meets the SEC requirements to apply Interpretation 17.06 for these vendors and related criteria as

described in its assertion, and we performed no procedures with respect to DFS’s determination of its eligibility to use Interpretation 17.06. 

In our opinion, management’s assertion that DFS complied with the aforementioned applicable servicing criteria as of and for the year endedNovember 30, 2009 for the Platform is fairly stated, in all material respects. 

/s/ Deloitte & Touche LLP 

Chicago, IL 

February 23, 2010