I have a 501 DVR. On April 9th I set it to record two events. One at 10 pm and the other at 11 pm. Neither recorded. When I clicked on the program in my scheduled events, the message it gave was that it didn't record due to an STB reboot. What is that? I called DISH and talked to someone in the technical area and well let's just say I might as well have asked my cat what the problem was. The only answer was that if kept happening was that I could get a new DVR from them. They could give me no explanation at all what this was and if it was correctable or if I did something wrong. Apparently their technical people are as knowlegeable as their CSR folks from India. Maybe someone here can help me out?