I'm getting more and more "Display driver has stopped responding and has.." these days. They still popped up before I did a bios flash but not very frequently. It happens with fullscreen video or games (just not steam games). I know that what happens is the gpu doesn't respond fast enough and windows resets it after two seconds and that you can edit the registry to up the 'wait time', but this doesn't seem right. Official word from ATi is that its not driver related its hardware. Maybe I'll try going back to the stock bios.
Also I have a second card installed, a 3870 running an additional two monitors, so my situation may be different.