was just watching andrew marrs megacities on chaseplay when the screen suddenly went dark, initially thought i'd sat on tv remote and switched it off? then the error message 'this channel is scrambled or unavailable' appeared. have seen this a few times before on espn, when the card needs rebooting. checked a few other recordings, both watched and unwatched and every one has proved unplayable? very very odd, i've not seen this before? still got 220gb free space on drive. gonna switch off and see if all returns to normal? hopefully its not the start of a meltdown not previously reported on this model any comments?