I played GW today for about 35-40 minutes. Everything was going great (and has been ever since I have owned the game) until it stalled out like I had a connection problem. Eventually, 5-10 seconds later, I can move again except that....THE SCREEN IS TURQUOISE!?

(sp?) Not the map, loading screens, inventory, etc. just the 3d graphics...
I backed out and my card was running at 61 degrees. I re-started and it did the same thing. I waited about 10 minutes and re-started, same thing.
Anyone have any ideas?
btw I have an eVGA 7600 gt superclocked card