<Page> Exhibit 12 Ratio of Earnings to Fixed Charges <Table> <Caption> THREE MONTHS SIX MONTHS (IN THOUSANDS) ENDED JUNE 30, ENDED JUNE 30, 2004 2003 2004 2003 FIXED CHARGES: Interest expense .................. $ 809 $ 971 $ 1,548 $ 2,398 Interest expense charged against gain on bond repurchases and exchanges ..................... -- 1,140 -- 5,527 Interest expense included in rent expense ........................... 113 109 236 215 Preferred stock dividends ......................... -- -- -- -- --------- --------- --------- --------- Total fixed charges ............... $ 922 $ 2,220 $ 1,784 $ 8,140 ========= ========= ========= ========= EARNINGS: (Loss) income from continuing operations ............. $ (5,913) (5,505) $ (15,255) (1,473) Fixed charges ..................... 922 2,220 1,784 8,140 Preferred stock dividends ......................... -- -- -- -- --------- --------- --------- --------- Total Earnings .................... $ (4,991) $ (3,285) $ (13,471) $ 6,667 ========= ========= ========= ========= Ratio ............................. (5.4) (1.5) (7.6) (0.8) ========= ========= ========= ========= Excess (Deficiency) of Earnings .......................... $ (5,913) (5,505) $ (15,255) (1,473) ========= ========= ========= ========= <Caption> YEAR ENDED DECEMBER 31, (IN THOUSANDS) 2003 2002 2001 2000 1999 FIXED CHARGES: Interest expense .................. $ 3,967 $ 11,608 $ 16,518 $ 12,844 $ 836 Interest expense charged against gain on bond repurchases and exchanges ..................... 5,527 -- -- -- -- Interest expense included in rent expense ........................... 402 446 438 374 64 Preferred stock dividends ......................... -- -- -- -- 1,020 --------- --------- --------- --------- --------- Total fixed charges ............... $ 9,896 $ 12,054 $ 16,956 $ 13,218 $ 1,920 ========= ========= ========= ========= ========= EARNINGS: (Loss) income from continuing operations ............. $ (10,938) $ (56,501) $(140,919) $ (62,292) $ (21,087) Fixed charges ..................... 9,896 12,054 16,956 13,218 1,920 Preferred stock dividends ......................... -- -- -- -- (1,020) --------- --------- --------- --------- --------- Total Earnings .................... $ (1,402) $ (44,447) $(123,963) $ (49,074) $ (20,187) ========= ========= ========= ========= ========= Ratio ............................. (0.1) (3.7) (7.3) (3.7) (10.5) ========= ========= ========= ========= ========= Excess (Deficiency) of Earnings .......................... $ (10,938) $ (56,501) $(140,919) $ (62,292) $ (22,107) ========= ========= ========= ========= ========= </Table>