I am also having problems with my wireless receiver and for the past week, it has happened EVERY night after midnight while I'm watching DVR.  Last night I had to reset three times.  I get these messages: "Network problems have stopped this stream.  The program is not currently available for playing."  "Recording playback is unavailable.  Make sure this TV receiver and the DVR receiver are connected to the network."  I have a full signal on the wireless receiver and everything appears to be in working order on both the router and the wireless connection box that is attached to the router.  I'm feeling like I need to call Tech Support and get them to give me a wired box.  I never wanted the wireless one in the first place.