<ARTICLE>                     5
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  INFORMATION   EXTRACTED  FROM  THE  CONDENSED
CONSOLIDATED  BALANCE  SHEETS ON THE FORM 10-Q/A FOR THE PERIOD ENDED  SEPTEMBER
30, 1998 AND THE CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS AS FILED ON FORM
10-Q/A FOR THE PERIOD ENDED  SEPTEMBER 30, 1998 AND IS QUALIFIED IN ITS ENTIRETY
BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>                                   1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                              DEC-31-1998
<PERIOD-START>                                 JAN-01-1998
<PERIOD-END>                                   SEP-30-1998
<CASH>                                           60,643
<SECURITIES>                                     37,699
<RECEIVABLES>                                    81,683
<ALLOWANCES>                                      7,923
<INVENTORY>                                      12,059
<CURRENT-ASSETS>                                213,371
<PP&E>                                          111,095
<DEPRECIATION>                                   73,794
<TOTAL-ASSETS>                                  475,763
<CURRENT-LIABILITIES>                           109,110
<BONDS>                                               0
<PREFERRED-MANDATORY>                                 0
<PREFERRED>                                           0
<COMMON>                                            265
<OTHER-SE>                                      293,883
<TOTAL-LIABILITY-AND-EQUITY>                    475,763
<SALES>                                         337,779
<TOTAL-REVENUES>                                337,779
<CGS>                                           135,993
<TOTAL-COSTS>                                   135,993
<OTHER-EXPENSES>                                214,935
<LOSS-PROVISION>                                      0
<INTEREST-EXPENSE>                                    0
<INCOME-PRETAX>                                  (5,884)
<INCOME-TAX>                                     (1,247)
<INCOME-CONTINUING>                              (4,637)
<DISCONTINUED>                                        0
<EXTRAORDINARY>                                       0
<CHANGES>                                             0
<NET-INCOME>                                     (4,637)
<EPS-PRIMARY>                                     (0.20)
<EPS-DILUTED>                                     (0.20)