I have a total of 12 recorded programmes waiting to be watched, about 20 hours altogether. Yet the free space shows up as only around 36%, which is surely much too low? I have a sneaky suspicion that programmes I have watched and deleted haven't released their space back to be re-used, though I know of no way of checking this. One thing that makes me suspicious is that a series I set to record before I went away on holiday recorded only half of the first episode, then no more episodes at all; but perhaps this is a coincidence/red herring? Other series that I preset at the same time were recorded successfully. Am I right in thinking that there should be more than 36% free space available on my HD? If so, is there anything I can do to increase it? I assume a format would do this but I don't want to lose the recordings already on the HD.