<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED STATEMENTS OF OPERATIONS, CONSOLIDATED BALANCE SHEETS, NOTES TO THE
FINANCIAL STATEMENTS AND SCHEDULE II AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH ANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED SEPTEMBER 30,
1999.
</LEGEND>
<RESTATED>
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS

                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1998
<PERIOD-START>                             OCT-01-1997
<PERIOD-END>                               SEP-30-1998
<EXCHANGE-RATE>                                      1
<CASH>                                          69,479
<SECURITIES>                                         0
<RECEIVABLES>                                   22,754
<ALLOWANCES>                                     1,898
<INVENTORY>                                     20,170
<CURRENT-ASSETS>                               122,104
<PP&E>                                          40,985
<DEPRECIATION>                                  22,036
<TOTAL-ASSETS>                                 145,321
<CURRENT-LIABILITIES>                           18,866
<BONDS>                                          3,849
<PREFERRED-MANDATORY>                            3,562
<PREFERRED>                                      6,467
<COMMON>                                           110
<OTHER-SE>                                     112,057
<TOTAL-LIABILITY-AND-EQUITY>                   145,321
<SALES>                                         80,856
<TOTAL-REVENUES>                               100,252
<CGS>                                           61,990
<TOTAL-COSTS>                                   73,528
<OTHER-EXPENSES>                                29,098
<LOSS-PROVISION>                                 1,295
<INTEREST-EXPENSE>                                 999
<INCOME-PRETAX>                               (27,244)
<INCOME-TAX>                                   (4,681)
<INCOME-CONTINUING>                           (22,563)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (22,563)
<EPS-BASIC>                                     (2.32)
<EPS-DILUTED>                                   (2.32)