This problem started happening a few weeks ago for no reason. Worked fine before. I run Parallels 6 with Windows 7 in full screen on Lion 10.7. If I close the lid on my MBP with Parallels as the active screen and reopen the lid, my system wakes for a few seconds and then the screen dims to black as if going to sleep. I don't know what mode it is actually in. Doesn't seem like actual sleep. Keyboard and gestures works, but nothing "reawakens" the computer. Powwr button doesnt work. If I close and reopen the lid, it comes back and fades to black again. But if I shut down Windows and quit Parallels, this problem disappears. If I close my lid while Parallels is not the active screen, I don't have this problem. So I suspect it's a problem with Parallels running full screen as the active screen on Lion. Anyone else having this problem?