Well thx first for the fast help. But it cannot be a problem with the pack program. I got winrar, winace and winzip, always the same bug. A virus is not possible too, because i formated my system before installing xp just 6 days ago. The free disk space on drive c: is about 5GB and every other disk has not less than 2 gb.
I think it is caused by the via bug. Cuz i got a KT266A Mainboard and a Soundblaster live value card. Thx for the tipp i try to download the newes drivers.