nforce4 crash related to heavy disk/video activity

Hi all,

I've been having crash problems on my nforce4 board.
All crashes I experience I experiece during gaming when there is a lot of
disk activity.
Videodrivers I used are 100.30, 100.51, 100.54 and 100.59
Nforce raid drivers I used are 8.22 and 9.30

Anyone recocnize and/or possibly solve this?

Patrick
btw. nvidia support appears to suck as there are still no nforce4 drivers
available for raid support except for xp drivers