I take it your useing the 280 series driver?
I had the same problem as well as others.
A couple things to try are to disable hardware acceleration in your web broser and in flash,fixed it for me,useing the 238.38 beta drivers.
Or down grade to the 275.33 driver which never had that issue.
Nvidia claims to have it fixed in the next WHQL release ,which will be out just befor the BF3 retail launch.
Last edited by TERM.; 10-15-2011 at 12:16 PM.