A short time ago I had quite a startling problem with the box. I had switched it on at about 1130 and tuned it to BBC News (231) ready to watch the weather and news from 1155.
We went for a walk and got back just after 12 so I went to the box and attempted to take it back to the start of the weather and pause. It kept coming up with the message about not being able to do that while the buffer was filling (I forget the exact words). The same thing happened when I tried to pause. This all when the box had been on and tuned for about 35 minutes.
I then thought I would check on the recorded programmes and they were all gone - no recordings at all. The schedule, however, was still there.
I managed to get it all back by switching off at the mains and back on again.