I have not had this happen for a long time but this morning I got up to see my DVR1100C was recording. It took about 6 minutes, but I finally got it to stop. It appears to have started about 4:15AM and had recorded just under 4 hours when I got it to stop. In the past I have turned it off by the back switch which causes the loss of the recording, but this time I got the recording so I could tell when. I noticed an update had taken place. Any connection? Fortunately, I have redone most of my configuration so the receiver was "unattended" but visible. Is the receiver getting ready to fail? One other time a similar thing happened I got 120 GB of continuous recording before it stopped....