This is strange. Last night, I went to bed with my phone at about 3:20 of usage. I woke up, re-opened the usage stats, and it was at 8:15. How did 5 hours of "usage" roll over night? No apps were running. iTunes WiFi sync was off. During this time, my battery drained from 68% to 49%. My cellular data stats did not move. What gives? I have no idea where this usage is coming from. Incidentally, I've been keeping an eye on it all morning, and the usage is continuing to rise without me doing anything on the phone. Ideas?