Intermittent DVR problem

Tried calling contact phone number multiple times. Automated line runs tests and finds no problem. I have frequent intermittent problem while watching DVR with U-Verse getting message "Network problems have stopped the stream. This program is not currently available for playing. Recording playback is unavailable. Make sure this TV receiver and the DVR are connected to the network. Often I can instantly click OK then resume play and it works. Lately a line on the screen pops up while watching DVR that says "press OK to browse a list of recordings. If I try to fast forward or do anything the picture is lost but the sound continues. I have to go to select recordings, navigate back to that recorded show and start watching again then fast forward and back works for 5-10 minutes until the line showing "press OK to browse a list of recordings once appears on the screen. I have restated the Cisco receiver then the DVR, unplugged the gateway for 10 seconds etc multiple times and nothing works. Help!