SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549
                             -----------------------
                                    FORM 8-K
                                 CURRENT REPORT
                       Pursuant to Section 13 or 15(d) of
                       the Securities Exchange Act of 1934
        Date of Report (Date of Earliest Event Reported): March 31, 2005
                             -----------------------

                                    Castelle

             (Exact Name of Registrant as Specified in Its Charter)


                                   California

                 (State or Other Jurisdiction of Incorporation)



                000-22020                                  77-0164056

         (Commission File Number)              (IRS Employer Identification No.)


            855 Jarvis Drive
              Suite 100
       Morgan Hill, California                               95037

(Address of Principal Executive Offices)                   (Zip Code)



                                 (408) 852-8000

              (Registrant's Telephone Number, Including Area Code)



                                 Not Applicable

          (Former Name or Former Address, if Changed Since Last Report)


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

|_|  Written communications pursuant to Rule 425 under the Securities Act 
    (17 CFR 230.425)

|_| Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)

|_| Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
Act (17 CFR 240.14d-(b)) |_| Pre-commencement communications pursuant to Rule
13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))




Item     4.02 - Non-Reliance on Previously Issued Financial Statements or a
         Related Audit Report or Completed Interim Review

         On March 28, 2005, the Company completed a preliminary review of its 
         accounting practices with respect to the classification of cost of 
         service revenue, procedures for revenue recognition and accrual for 
         paid-time-off, and determined that its Annual Report on Form 10-K for 
         the year ended December 31, 2003 and its Quarterly Reports on Form 10-Q
         for the quarters ended March 31, June 30 and September 30, 2004 contain
         the following incorrect assumptions and interpretations:

           1. Classification of cost of service revenue

                  The Company has concluded that its historical classification
                  of certain costs of service revenues did not conform to
                  generally accepted accounting principles. Historically, such
                  costs have been improperly included as a component of sales
                  and marketing expenses on the Company's consolidated
                  statements of operations; however under generally accepted
                  accounting principles, such costs are required to be
                  classified as cost of service revenues. Based on a preliminary
                  analysis, the Company expects to reclassify approximately
                  $700,000 in each of fiscal 2002 and 2003, and approximately
                  $800,000 for the nine-months ended September 30, 2004 out of
                  sales and marketing and include these amounts within cost of
                  service revenues in its statements of operations. The
                  reclassification will have no impact on reported revenue, net
                  income (loss) and earnings (loss) per share for the respective
                  periods. The misclassification, however, did result in gross
                  profit and operating expenses being overstated by equal
                  amounts. Consequently, the Company will restate its
                  consolidated financial statements for fiscal 2002 and 2003 in
                  its 2004 Form 10-K. The Company will also restate its
                  unaudited quarterly consolidated financial statements for each
                  of the 2003 and 2004 periods. The Company has concluded that
                  the internal control deficiency that led to the errors in the
                  historical classification of cost of service revenues is a
                  "material weakness" as defined by the Public Company
                  Accounting Oversight Board's Auditing Standard No. 2.

                  The Company's review of such costs was prompted in part by the
                  receipt in November 2004 and thereafter of a series of comment
                  letters issued by the Office of the Chief Accountant of the
                  Securities and Exchange Commission to the Company.

           2. Revenue recognition related to extended support contracts and 
              accrual for paid-time-off

                  The Company has determined based on a preliminary analysis
                  that as a result of an internal control deficiency, service
                  revenues attributable to extended support contracts were
                  overstated by approximately $50,000, $35,000 and $40,000 for
                  the nine-months ended September 30, 2004, fiscal 2003 and
                  fiscal 2002, respectively. These amounts should have been
                  deferred and recognized as service revenues in subsequent
                  periods. Such errors were the result of inadequate procedures
                  in place to correctly recognize sales related to deferred
                  support contracts. The revenue overstatements represent less
                  than 1% of the Company's total sales for the respective
                  periods. In connection with their audit of the Company's
                  consolidated financial statements for the year ended December
                  31, 2004, The Company's independent auditors, Grant Thornton
                  LLP, concluded that the internal control deficiency that led
                  to the aforementioned revenue recognition errors is a
                  "material weakness" as defined by the Public Company
                  Accounting Oversight Board's Auditing Standard No. 2.

                  The Company has also identified an error that resulted in an
                  overstatement of its accrual for paid-time-off beginning in
                  2002 and continuing through 2004. Based on a preliminary
                                       2


                  analysis, this error resulted in the overstatement of expenses
                  by approximately $25,000 in the aggregate during fiscal 2002,
                  2003 and for the nine-months ended September 30, 2004.

                  The Company will restate its consolidated financial statements
                  for fiscal 2002 and 2003 to correct for these errors. The
                  restated financial statements will be included in the
                  Company's 2004 Form 10-K. The Company will also restate the
                  unaudited quarterly consolidated financial statements for each
                  of the 2003 and 2004 periods.


         Both the Company's audit committee and management have discussed with
         Grant Thornton, the Company's Independent Registered Public Accounting
         Firm, and with PricewaterhouseCoopers LLP, the Company's predecessor
         Independent Registered Public Accounting Firm, the matters disclosed in
         this Current Report on Form 8-K.

         As a result of the material weaknesses described above, Company
         management will conclude that its disclosure controls and procedures
         were not effective as of December 31, 2004 and as of each date affected
         by the restatement.

         As a result of the pending restatement, the historical financial
         statements contained in Castelle's Annual Report on Form 10-K for the
         year ended December 31, 2003 and each of Castelle's Forms 10-Q for the
         year ended December 31, 2004 should no longer be relied upon.







                                    SIGNATURE
         Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.
Date: March 31, 2005

                                                 Castelle

                                                               

                                             By: /s/ Paul W. Cheng

                                                 Paul W. Cheng

                                                 Vice President, Chief Financial