November 28, 2006

Securities and Exchange Commission
Attn: Filing Desk, Stop 1-4
450 Fifth Street, N.W
Washington, DC 20549

RE: Rule 17f-2
    The RBB Fund, Inc. - Senbanc Fund
    Registration No. 811-05518, CIK No. 0000831114

Ladies and Gentlemen:

On behalf of our client, THE RBB FUND, INC. - SENBANC FUND, we are filing
electronically one copy of the EDGARized version of our examination report dated
November 22, 2006, submitted pursuant to the requirements of subsections (b) and
(c) of Rule 17f-2 under the Investment Company Act of 1940 as of August 31,
2006.

Yours truly,


/s/ Tim Mundy

Tim Mundy
Partner


Enclosure


REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors of The RBB Fund, Inc.:


We have examined management's assertion, included in the accompanying Management
Statement Regarding Compliance with Certain Provisions of the Investment Company
Act of 1940, that The RBB Fund, Inc. - Senbanc Fund (the "Fund") complied with
the requirements of subsections (b) and (c) of Rule 17f-2 under the Investment
Company Act of 1940 ("the Act") as of August 31, 2006. Management is responsible
for the Fund's compliance with those requirements. Our responsibility is to
express an opinion on management's assertion about the Fund's compliance based
on our examination.

Our examination was conducted in accordance with attestation standards
established by the American Institute of Certified Public Accountants, as
adopted by the Public Company Accounting Oversight Board (United States), and,
accordingly, included examining, on a test basis, evidence about the Fund's
compliance with those requirements and performing such other procedures as we
considered necessary in the circumstances. Included among our procedures were
the following tests performed as of August 31, 2006, and with respect to the
agreement of security purchases and sales, for the period from May 31, 2006 (the
date of the last examination) through August 31, 2006:

     o    Count and inspection of all securities located in the vault of PNC
          Bank in Pittsburgh, Pennsylvania without prior notice to management;

     o    Confirmation of all securities held by institutions in book entry form
          for the account of PNC Bank, on behalf of PFPC Trust Company (the
          "Custodian" of the Fund), by The Depository Trust Company;

     o    Confirmation of all securities hypothecated, pledged, placed in
          escrow, or out for transfer with brokers, pledgees and/or transfer
          agents;

     o    Reconciliation of all such securities to the books and records of the
          Fund and the Custodian;

     o    Confirmation of all repurchase agreements with brokers/banks and
          agreement of underlying collateral with the Custodian's records; and

     o    Agreement of one security purchase and one security sale or maturity
          since our last report from the books and records of the Fund to broker
          confirmations.



We believe that our examination provides a reasonable basis for our opinion. Our
examination does not provide a legal determination on the Fund's compliance with
specified requirements.

In our opinion, management's assertion that the Fund complied with the
requirements of subsections (b) and (c) of Rule 17f-2 under the Investment
Company Act of 1940 as of August 31, 2006 with respect to securities reflected
in the investment account of the Fund is fairly stated, in all material
respects.

This report is intended solely for the information and use of management and the
Board of Directors of The RBB Fund, Inc. and the Securities and Exchange
Commission and is not intended to be and should not be used by anyone other than
these specified parties.


DELOITTE & TOUCHE LLP
Philadelphia, Pennsylvania
November 22, 2006


Management Statement Regarding Compliance With Certain Provisions of the
Investment Company Act of 1940


We, as members of management of the Senbanc Fund (the "Fund"), a series of The
RBB Fund, Inc., are responsible for complying with the requirements of
subsections (b) and (c) of Rule 17f-2, "Custody of Investments by Registered
Management Investment Companies," under the Investment Company Act of 1940. We
are also responsible for establishing and maintaining effective internal
controls over compliance with those requirements. We have performed an
evaluation of the Fund's compliance with the requirements of subsections (b) and
(c) of Rule 17f-2 as of August 31, 2006, and from May 31, 2006 (the date of our
last examination) through August 31, 2006.

Based on this evaluation, we assert that the Fund was in compliance with the
requirements of subsections (b) and (c) of Rule 17f-2 under the Investment
Company Act of 1940 as of August 31, 2006, and from May 31, 2006 (the date of
our last examination) through August 31, 2006, with respect to securities
reflected in the investment account of the Fund.




/s/ Edward J. Roach
- -----------------------------------------------
Edward J. Roach, President & Treasurer


/s/ James G. Shaw
- ------------------------------------------------
James G. Shaw, Assistant Treasurer



                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  FORM N-17F-2

               Certificate of Accounting of Securities and Similar
                          Investments in the Custody of
                         Management Investment Companies



                    Pursuant to Rule 17f-2 [17 CFR 270.17f-2]
- --------------------------------------------------------------------------------- ------------------------------------

1. Investment Company Act File Number:                                            Date Examination Completed:

811-05518                                                                         AUGUST 31, 2006
- --------------------------------------------------------------------------------- ------------------------------------
2. State Identification Number:
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
                                                                                     
      AL                 AK                 AZ                 AR                 CA                CO
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      CT                 DE                 DC                 FL                 GA                HI
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      ID                 IL                 IN                 IA                 KS                KY
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      LA                 ME                 MD                 MA                 MI                MN
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      MS                 MO                 MT                 NE                 NV                NH
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      NJ                 NM                 NY                 NC                 ND                OH
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      OK                 OR                 PA                 RI                 SC                SD
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      TN                 TX                 UT                 VT                 VA                WA
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      WV                 WI                 WY                 PUERTO RICO
      ----------------------------------------------------------------------------------------------------------------
      OTHER (SPECIFY):
- ----------------------------------------------------------------------------------------------------------------------
3. Exact name of investment company as specified in registration statement: SENBANC FUND

- ----------------------------------------------------------------------------------------------------------------------


- ----------------------------------------------------------------------------------------------------------------------
4. Address of principal executive officer (number, street, city, state, zip code):

    103 Bellevue Parkway, 4th Floor, Wilmington, DE, 19809