The power was off on my 722 for two months while I was out of the country. When I returned, all my channels said...Program not Authorized. It was as though there was no card in the receiver, but of course this receiver does not use a card. Stopping and restarting did no good. I had to call up Dish and get the receiver 'Hit" again and then all was OK again. My question is.....Why does Dish remove my programming after a long period of being unplugged? How do they know I was unconnected? I do not think the satellite knows if I am receiving or not so is the receiver programmed to require a re-hit after a long period of disuse?