Re: Xorg server crash in nvidia 295.20.
I have a similar problem.
Sometimes the system freezes at random but it doesn't stop immediately. The video freezes, but the mouse pointer is still active for 5-10 seconds, then it starts to slow down for 2-3 seconds and the system freeze and needs a physical reset.
Some other time only Xorg crashes.
My video card is a GT250 1G RAM, and the system is a Gentoo-x86 with gentoo-kernel from 3.2.11 to 3.2.14 and Xorg 1.11.4.
I tested all the 295 and the 302.17 drivers, with the same result.
The system works fine with the 290.10 release if the PowerMizer is setted to MaximuPerformance, otherwise the system or Xorg crash at random even with this driver