My 722 crashes at least once a day. Definition of crash in this case: Either "complete signal loss" for satellite stations, or its OTA counterpart. When the satellite signal is lost, OTA stations work, and vice-versa. Recordings can still be played, although responses to remote commands can take as long as 10 seconds. A power reset always restores operation. Is this sufficient reason to get a replacement receiver from Dish? Is it possible that the problem is in the dish itself?