Just a little heads up, after updating to that driver set a while ago I was getting crashes. Windows was claiming a BSOD but my monitor would be stuck on a frame (similar to overheating vid card symptoms) so I decided it was the drivers causing this ruckus so I reverted to the 197.13 set and L4D2 runs fine without the BSOD. Just thought this would be nice to know if you were recently crashing after this driver update.