<ARTICLE> 5
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                          99,577
<SECURITIES>                                   474,151
<RECEIVABLES>                                   44,387
<ALLOWANCES>                                     2,293
<INVENTORY>                                      4,784
<CURRENT-ASSETS>                               648,485
<PP&E>                                         163,572
<DEPRECIATION>                                  78,784
<TOTAL-ASSETS>                                 983,248
<CURRENT-LIABILITIES>                           38,415
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           226
<OTHER-SE>                                     824,690
<TOTAL-LIABILITY-AND-EQUITY>                   983,248
<SALES>                                        289,358
<TOTAL-REVENUES>                               289,358
<CGS>                                          111,295
<TOTAL-COSTS>                                  111,295
<OTHER-EXPENSES>                                11,979
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 21,336
<INCOME-TAX>                                    10,007
<INCOME-CONTINUING>                             11,329
<DISCONTINUED>                                (21,449)
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (10,120)
<EPS-BASIC>                                     (0.45)
<EPS-DILUTED>                                   (0.45)