I'm trying to fix a problem with a MX-850 and an MRF-250. Heres the problem. Every two or three times you hit a certain button, the MRF will send it to the DirecTV HR20 twice. IE, hit "list" once, and the dvr page comes up for a split second, then disappears. Or if number two is pressed, 22 will show up. Each button is only pressed once, and about half the time the MRF sends the IR twice. This is only happening with the DirecTV HR20, the reciever and dvd player work flawlessly. Does anyone know whats going on with this, or if theres a fix for it?