My multroom DVR - Motorola 7216 - has a status of 95% available, there was only one program recorded. So I'm recording a 30 program and about 25 minutes into it, I get a message that the DVR has to stop recording because it's all filled up. This has happened twice before in the recent past - I tried that home agent reboot crap but it did nothing evidently. What's going on here? Is the DVR shot? It's frustrating to have recordings cut short. How do I fix this?