I'm using RH 8 with the 4496 drivers.
I have a TNT2 card.
There seems to be an annoying driver bug with the nvidia drivers.
I think it happens on older drivers also.
the bug causes blender to crash, sometimes crashing X.
The best way to see what causes the bug is to look at the workaround patch which was submitted to the blender list:
could someone please look at this and fix it in the nvidia driver?
it is not a blender bug.
the code works normally on other harder, but seems to crash tnt2.
I don't know if the bug happens on other nvidia cards.