Black screen?
Have had this problem, and another one as well... I leave my system on overnight, running the BOINC grid stuff. Use the F1 key to turn my display off when I go to bed, but on two of the 7 mornings I have had the system when I got up it refused to come out of a black screen. System seemed to be still running, just could not wake up the display. Have a Genius bar appointment for this afternoon for a network card issue, will also talk to them about this situation and the game problem.