I seem to have a commonly occuring case of a severe graphical glitch which often simply turns the screen pure white, or dramatically changes around the colors (often pink and purple) and has random images scattered everywhere; walls, floors, ceiling, cars, even on my face and armor. I have a new computer, with a pair of Nvidia GeForce 9800gt 512mb graphics cards working in dual mode. If anyone can give any information as to why this bizzare graphical terror is occuring, I'd be glad to hear of it.

P.S. There is also random glitches (random "walls" jutting from most rappels in game). This is a less serious issue, but still quite a problem when an enemy is in the open, but is covered by this "wall", and I'm unable to see him; not to mention its quite distracting since the glitch is flashing everywhere if a rappel is within view.