I have a Scientific Atlanta Explorer 8000HD and twice this week when I am watching a DVD on my home theater the box shut off causing the TV to shut off as well. So the second time it happened I checked the Menu of the box to make sure a timer wasn't set. While I was doing that the box just shut off again and it rebooted. It turned out that it never fully rebooted and I had to manually reboot the box. Is there something wrong with the box?