Hi im having the same problem aswell as well as a swap buffer error on load. I'll save you the time and say im defo fully uptodate im using a AMD HD 6970 x2 on crossfire, ive tryed out of crossfire aswell. i dont think its an error with my graphics driver been out of date as im using Catalyst 12.4 (22 - jun - 2012) is there anything else that might be causeing this issue.