trust you? single drive, or dual in RAID0?
Ive had this problem before, and it was crazy. Was real annoying when you 'freeze' when weaving through the mountains, and during that freeze your saying to yourself 'please unfreeze before I crash, repeat,repeat'.
I then had a Nvidia 5900XT, IDE 80Gb WD, 1024GB DDR400 DualChannel.
Now I have similar specs to Cali.