As said before, sounds like your hard drive is going south. Call for replacement.I've been having a problem the last couple months when watching something HD on live tv and rewinding back doesn't work and switches to live tv. Is this normal or should I call DISH?
I've seen the position jump back to the beginning of the recording if I rewound or forwarded. This was happening on an OTA channel with a bad/intermittent signal. When the signal level came back up to "normal" the problem disappeared. It was not nice to have to only use play and pause and restart an hour show after watching say 1/2 hour. So station problem there.