My first post here, I registered to try to find out about this issue. I've had my 822 a week now, and I've been experiencing the issue where the phone will just shut itself off after being left idle for a while, and cannot be turned back on unless I remove the battery and then put it back. I have downloaded the update and it still happens. It's happened 3 times today, when the phone is just left sitting on a desk, so nothing is touching it. I've looked around and found this is somewhat common (though two family members who got 822s at the same time as me don't experience it of course) so while I'm considering asking for a replacement, I wonder if that will do any good.