During my 1:45 hour stint on Tunisia (1 hour of flying, 0:45 waiting for the fields to open) I had one major freeze. Mid air, no activity around. Nothing moved, engine roared. Ctrl-Alt-Del worked, but instead of Desktop I only got a blank screen. Returning back to the game didn't work either. So logically the next step was to kill AH3 via the Task Manager. It worked, I was back on the Desktop. Click-click on the icon and back to SEA2, in half a minute I was airborne again.