<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
Consolidated Balance Sheet at September 30, 1999, and the Consolidated
Statements of Operations for the nine months ended September 30, 1999, and is
qualified in its entirety by reference to these financial statements.
</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<EXCHANGE-RATE>                                      1
<CASH>                                          69,458
<SECURITIES>                                    90,634
<RECEIVABLES>                                   20,901
<ALLOWANCES>                                       868
<INVENTORY>                                          0
<CURRENT-ASSETS>                               184,932
<PP&E>                                          19,973
<DEPRECIATION>                                  10,163
<TOTAL-ASSETS>                                 243,021
<CURRENT-LIABILITIES>                           36,021
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            51
<OTHER-SE>                                     206,707
<TOTAL-LIABILITY-AND-EQUITY>                   243,021
<SALES>                                         57,100
<TOTAL-REVENUES>                                57,100
<CGS>                                                0
<TOTAL-COSTS>                                   22,379
<OTHER-EXPENSES>                                40,092
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  (578)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                              (578)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     (578)
<EPS-BASIC>                                   (0.01)
<EPS-DILUTED>                                   (0.01)