I was having frame-freeze problems.. game would play fine then start to momentarily freeze.. frame rate showed a drop.. I suspect it was going to 0 but the on screen display only showed a downgrade.. probably sampling just didn't catch the 0 point. At first I could log out-relog and it would fix it.. then it progressed to the point I had to reboot to clear the issue.. Then in became necessary to reboot in safe mode, then restart in normal mode. I had the computer gone over, and all that was found was a couple bad sectors on the hard drive. Lastly I started getting wierd colors on my display.. Figured the graphics card was on the way out.. I went ahead and put a new system together. I pulled the HD out of the old computer to use as a 2nd drive in my new one. I left AH installed on the old HD.. I had been running the game on my new pc for a week or so, then 1 session I started getting the screen freeze big time. I un-installed the game, and re-installed on the new drive. No issues since. I think my problems may have been a combo of graphics card and hard drive.