Re: nvidia driver very unstable on gtx260m
Been running 256.29 now for 4-5 hours without crashes. That was possible on previous drivers on rare occasions as well though, so I'm not convinced it's fixed yet.
But I strongly suspect it was related to performance profiles, as for me clicking my "stealth mode" button would fix it (and I suspect reset the performance profile of the card). And I no longer need to do that.
Either way, well worth a try.