When KO patched a couple weeks ago, one of my computers and 2 of my friend's computers can't effectively run KOL. The computer can crash anywhere from the login screen to in game playing after it's worked for a couple hours. The XP Pro error message says a hardware driver error occurred which it can't pinpoint. No drivers were updated, but since, I have updated my video card drivers and reinstalled KOL to no avail. The computer runs fine for everything else, including WOW and Counterstrike. Any ideas?