It seems a lot of folks are getting crashes in varying degrees with the following message.
Display driver stopped responding and has recovered.
Most times, getting this error will result in a recovered desktop but will still require a reboot. Other times, your machine will require a hard reset.
I've been doing a considerable amount of testing with my own machine, which is an i7 based system running GTX580 SLI. Some of the fixes I've seen posted I was unwilling to accept, such as using DX9. Others didn't appear to be related to this particular issue, so I figured it couldn't hurt to provide another perspective on the problem.
Download either MSI Afterburner or eVGA Precision X. If you're running an SLI configuration like me, you may want to setup a fan profile to help with cooling. The default settings were causing my temperatures to hit the mid 90's, which is higher than I'm comfortable with. Even at these temperatures I did not experience any tearing or visual abnormalities. I did, however, still crash to the desktop after the new fan profile had been applied and my temperatures never exceeded 65. So while my crashes were not heat related, it's possible yours are.
I also noticed that the voltage of my GPUs dipped very, very slightly at the time of the crash. I believe this has been the source of my problems. I increased the voltage slightly to 1.025, which is still safe and only one notch above the stock voltage. Since doing that, I have not experienced a single crash.
Like many others, this instability was not present anywhere else but World of Warcraft.
Hope this helps!