<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000

<S>                             <C>               <C>               <C>               <C>                <C>
<PERIOD-TYPE>                   YEAR              3-MOS             3-MOS             6-MOS              6-MOS
<FISCAL-YEAR-END>               DEC-31-1999       DEC-31-1999       DEC-31-2000       DEC-31-1999        DEC-31-2000
<PERIOD-START>                  JAN-01-1999       APR-01-1999       APR-01-2000       JAN-01-1999        JAN-01-2000
<PERIOD-END>                    DEC-31-1999       JUN-30-1999       JUN-30-2000       JUN-30-1999        JUN-30-2000
<CASH>                               25,215                 0                 0                 0            111,679
<SECURITIES>                         34,742                 0                 0                 0                693
<RECEIVABLES>                        42,434                 0                 0                 0             37,774
<ALLOWANCES>                        (2,512)                 0                 0                 0            (2,132)
<INVENTORY>                          13,810                 0                 0                 0             20,808
<CURRENT-ASSETS>                    141,415                 0                 0                 0            205,904
<PP&E>                               77,455                 0                 0                 0            103,170
<DEPRECIATION>                     (15,292)                 0                 0                 0           (27,874)
<TOTAL-ASSETS>                      295,474                 0                 0                 0            353,355
<CURRENT-LIABILITIES>                66,584                 0                 0                 0             82,095
<BONDS>                             205,213                 0                 0                 0            204,815
<PREFERRED-MANDATORY>                     0                 0                 0                 0            154,516
<PREFERRED>                               0                 0                 0                 0                  0
<COMMON>                            196,937                 0                 0                 0            200,010
<OTHER-SE>                        (160,317)                 0                 0                 0          (273,503)
<TOTAL-LIABILITY-AND-EQUITY>        295,213                 0                 0                 0            353,355
<SALES>                                   0            19,459            34,028            34,776             66,045
<TOTAL-REVENUES>                          0            38,053            53,264            64,873            106,111
<CGS>                                     0            14,273            28,787            25,547             54,461
<TOTAL-COSTS>                             0            28,439            50,222            53,739             96,104
<OTHER-EXPENSES>                          0            26,793            75,665            31,519            121,196
<LOSS-PROVISION>                          0             (148)             1,082               754              3,156
<INTEREST-EXPENSE>                        0             6,149             7,225            12,086             14,896
<INCOME-PRETAX>                           0          (22,960)          (78,127)          (43,089)          (122,919)
<INCOME-TAX>                              0                 0                 0                 0                  0
<INCOME-CONTINUING>                       0          (22,960)          (78,127)          (43,089)          (122,919)
<DISCONTINUED>                            0                 0                 0                 0                  0
<EXTRAORDINARY>                           0                 0                 0                 0                  0
<CHANGES>                                 0                 0                 0                 0                  0
<NET-INCOME>                              0          (22,960)          (78,127)          (43,089)          (122,919)
<EPS-BASIC>                               0            (1.61)            (2.79)            (3.06)             (4.35)
<EPS-DILUTED>                             0            (1.61)            (2.79)            (3.06)             (4.35)


</TABLE>