I've had my ipad since lanch day, use it several hours each day, and haven't had any problems. However, yesterday I was playing some games on my iPad as usual and everything was fine. Then I took a break, hit the sleep button, and set it down on my couch. I came back 5 minutes later and went to unlock as usual....except the screen just remained black. Apparantly, it had completely shut down on its own (I've never had this happen before). So I tried turning it back on (several times), but nothing happened. I thought maybe the battery had died (even though it said it was at 40% before it shut down). So I plugged it and tried turning it on several more times with no luck (by this time I was really starting to sweat, and I thought maybe the battery or even the screen had died)........ then it finally turned on after about five minutes of trying. When it came on, it said the battery was still at 40%, and I unplugged it and let it run down to almost 0, before charging it back to 100%. Any idea what happened? Everything seems completely normal again, but I'm almost scared to unplug it now, heh.