Re: kvm windows 7 guest segfaults under centos 5.7 with 285.05.09 driver from elrepo
this may have been a hardware issue. i upgraded to centos 6 and had random lockups using nouveau, as well as both the 285 and 280 nvidia drivers from elrepo. so i finally just pulled the card and went back to onboard video for now. so far things are stable. so my issue could be a sick video card that only gets tickled by certain access patterns.