Current Display Mode: 1600 x 900 (32 bit) (60Hz)
Debug Message: Game Resolution: 1024 x 768
Driver Date: 7/27/2009 12:22:18
First and foremost... it's never a good idea to run a game at a different aspect ratio than your native monitor.
And update those old video drivers. They are sure to cause problems.
Set your game resolution to your desktop resolution of 1600x900 and see if that takes care of the problem.
If not, post the new debug.err and we'll go from there.
Another suggestion (since you seem to have played quite a while before the crash, and there was no mention of a video driver error in the debug): Try playing on battery power (not AC). That will throttle down the speed, and so generate less heat. You may simply have an overheating issue, since this game likes to stress both the video and the CPU.
You could also try disabling mods, if you are using any.