Okay, I've been having some strange power issues lately, and I was wondering if anyone else has been experiencing them. When I close the screen, 60 or 70 percent of the time it goes to sleep. Other times, it goes to sleep for a split second, then comes back to life. I can tell becasue the DVD drive spins up, and I hear the sound it makes when iChat connects. About 5% of the time, it shuts down completely, even when the battery is full. Strange, huh?