I have 2 monitors my computer specs are the following:
Intel Core 2 Duo 3.16GHz
3.17 GHz, 2.99 GB of RAM
NVIDIA GeFORCE GTX 460
3 GB DDR III Patriot RAM
750 WATT Antec PSU

Lately I have been having graphical errors similar to these. (Links are cut in thirds because I'm a new poster)

http: *** //img193.imageshack ***** .us/img193/1908/graphicalerror.jpg
http: *** //img7.imageshack ***** .us/img7/1605/graphicalissue.jpg

The error seems to be happening when I'm looking at websites on my secondary monitor. I also get sound looping and 10 second lockups while surfing the web and playing WoW which leads me to believe that this is not necessarily a graphics card issue. My card also does not seem to be overheating. Does anyone know what kind of problem this could be? Perhaps it's a RAM issue?? Upon restarting WoW the errors are fixed.

I also at times experience choppy gameplay after surfing the web on my secondary monitor which can be resolved by restarting WoW. (My gameplay is usually smooth with a pretty consistent framerate)

All feedback is greatly appreciated.