I know there were earlier threads about 622s rebooting, but I'm not sure this is the same problem. About an hour after the install mine suddenly went to a black screen and static audio. None of the remote buttons did anything. After a couple minutes the unit rebooted. I noted the time and date. 53 hours later it did it again. And again 3 hours after that. Does this match problems others have reported or is this something new? I think I read that Dish had acknowledged a software issue caused some rebooting. BTW, I don't think it's a heat issue. The 622 sits in the open with 3 feet clear on the right, 6" on the left, and 3 feet above. No external heat source anywhere near it.