Don't know, I've seen this before, I just deleted it. do you leave the box plugged in constantly?
The device seems to have a few bugs - ones I noticed so far after a few months are:
1. Deleted scheduled recordings re-appear (one I deleted has re-appeared twice)
2. Can't watch some recorded programmes as it thinks I'm not subscribed to the channel even though I am.
3. Just noticed yesterday that one film I recorded is 2 hours of black screen with no sound (info has the correct film name etc)
4. I'm also convinced that it recorded the wrong film once (info has the correct film name etc) - I don't know if the channel showed something different, as I didn't try to watch for afew weeks) but given the other issues I am not giving it the benefit of the doubt.