So, this afternoon I started experiencing problems with my 622 receiver. Watching ESPN HD and the receiver appears to lock up with a frozen picture. Unresponsive to the remote and the only solution I've found is to reboot the receiver. Any ideas what's going on and how to fix it? Thanks! Edit: Never mind. Hard rebooted and got a "Hard Drive Failure" error message. Dish tech support chat is sending a new 622 via UPS.