Re: NVRM: GPU at 0000:01:00.0 has fallen off the bus.
I have the same problem with my GeForce 6600 card (quite old, and it has several swollen capacitors), 270.41.03 nVidia Drivers, and the same error message before the freezes (which usually happen when I watch Flash video). I run Gentoo Linux as well.
Do not know what to do. :-(