Have you guys experienced your phone shutting off and restarting? Happened to me twice, i think. most recent was this morning, i was just picking various pics for my contacts list (gotta supply pics for the flipping tiles on my home screen!) and cropping them when it just shut off and started up the reboot process. Is this an issue? Have you guys experienced something like this? I'm a little paranoid because I already had to send back my wife's 810 because it had a defective screen. Thank, ya'll!