Tried 4620, it crashed too.
I'm on slackware 9.1, using the modified 4620 nvidia drivers mentioned below (and a bunch of other official nvidia versions too)
Using A7N266-VM board, with the built in video.
It can work for a few hours, then boom, optionally horizontal lines of crud thru the
xwindow display, the screen freezes, and the mouse still works.
I've spent a week battling this, the same hw works fine under win2000,
that's it, I'm going to take it back and find a truly "linux friendly" motherboard and video card. Nice try nvidia. Later.
Gaud I hope the grass is greener somewhere else. This kind of pain is what will kill linux off.