Incomplete playback of Food Network DVR Recordings.

I have been having a lot of trouble playing back Food Network recordings.  It shows the entire show recorded, but I am unable to playback the entire show. Sometimes it stops playing with five minutes left.  Sometimes it stops playing half way through.  Once it stopped playing immediately after I hit the play button.  It doesn't matter if I try to play it back on the DVR or one of the receivers.