Re: BUG: Oops 0000 or 0002 with error msg "Unable to handle kernel paging request"
I had seen this with multiple stable kernels. 2.6.17, .18, .19, and .19.1. The indication that it was caused by the nvidia driver was that it only happened when the nvidia driver was loaded. My theory being that the nvidia driver was corrupting memory which was only later hit by memory-intensive applications (bittorrent, video games, etc).
When I started having these problems, I upgraded my mobo BIOS. That didn't help, but in the 3 months since then, they released a new version which I just upgraded to. This version seems to have fixed the problem.