Unit keeps resetting itself

My ViP 612 (third one from Dish Network) will randomly go into reset mode on it's own. Sometimes once or twice a day, often several times an hour! It seems to get worse over time as the latest unit went several weeks before starting this activity. This is quite annoying and may happen at any time. I have removed the unit from the surge protector and plugged it directly into the wall socket.

It seem unrelated to any other activity in the house, such as refridgerator or A/C kicking on. The latest unit was also installed by their technician who also saw no other problems. As I said, this is my third unit with the same problem. Is there a design flaw in this unit? Are many other people having the same problem? If so I should I push Dish network to replace this unit with a different model.