<ARTICLE> 5
<MULTIPLIER> 1,000
       
                                                  
<PERIOD-TYPE>                   3-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1998
<PERIOD-START>                             APR-01-1998             JAN-01-1998
<PERIOD-END>                               JUN-30-1998             JUN-30-1998
<CASH>                                          47,009                  47,009
<SECURITIES>                                    51,988                  51,988
<RECEIVABLES>                                   72,999                  72,999
<ALLOWANCES>                                    12,727                  12,727
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                               215,074                 215,074
<PP&E>                                         204,282                 204,282
<DEPRECIATION>                                  85,456                  85,456
<TOTAL-ASSETS>                                 600,187                 600,187
<CURRENT-LIABILITIES>                          274,162                 274,162
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                           462                     462
<OTHER-SE>                                     273,332                 273,332
<TOTAL-LIABILITY-AND-EQUITY>                   600,187                 600,187
<SALES>                                        121,435                 240,461
<TOTAL-REVENUES>                               121,435                 240,461
<CGS>                                           37,620                  76,655
<TOTAL-COSTS>                                   37,620                  76,655
<OTHER-EXPENSES>                                88,206                 174,015
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                               5,227                  10,395
<INCOME-PRETAX>                                 (8,185)                (16,859)
<INCOME-TAX>                                    (3,307)                 (1,893)
<INCOME-CONTINUING>                             (4,878)                (14,966)
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    (4,878)                (14,966)
<EPS-PRIMARY>                                     (.11)                   (.33)
<EPS-DILUTED>                                     (.11)                   (.33)