It was fine earlier today, but now its messed up at the bottom.. every other channel looks perfect. I already tried unplugging the power for 35 seconds.. no change. Both the HD and the composite RCA outputs have this corruption at the bottom.

The lady at the sky centre said it was just the screen saver and the event was being uploaded.. but the box office display is slightly weird too. It has a dark grey part at the bottom.

http://img8.imageshack.us/gal.php?g=boxofficechannel.jpg