Originally Posted by elvanor
*all* 460 GPUs; what I mean is that is not related to a particular, faulty, card.
No definetly not. I have a gtx 460 (Gigabyte 1 GB OC), and I am using it a lot playing wow under wine, in linux. I also use kde with a lot of desktop effects activated. I have yet to see a freeze in X.
I am using a Gentoo (so it's not Gentoo related) and a recent self built 2.6.37, arch is an amd64.
It may be a hardware incompatibility or even a other defective part, which would explain why the symptom is still there after a card replacement. I really recommend running the usual stress tests to make sure it isn't a hardware error.