I always hesitate to read threads like this.
I just got two "NVidia display driver has stopped responding" errors, right in a row, after closing this thread.
My GTX460 1GB WindForce OC card has one failing fan, however, the GPU was idle, temp is 34C, PSU is Antec 650W EarthWatts.
I'm running Win7 64-bit HP, with 280.26 (I think) drivers, which have been rock-solid thus far. This is the first time I've ever gotten that error.
I do have an Agility 2 90GB SSD that I installed, maybe a month ago.
Edit: After posting this post, every window went blocky and polygonal.
Edit: Rebooted, seems ok thus far. Found out one of the fans was blocked by a wire. Guess the GPU temp reported by Precision was misleading.