My 622 was absolutely stable until the last 2 months with a software update. Holy crap is this is new rev annoying. I can barely watch HD anymore b/c it stutters (not when you have it in the guide mode). Not overheating, etc. It has happened 3 separate times just in the last few days. 20 minute reboot and it is good but what a pain. Especially when watching a game and missing 20 minutes of it for a reboot. The previous software had no issue so why mess with it. It feels like the old days when the 501 screen went black all the time.