Digitial cable/HD channels: Having multiple problems with pixelated pictures, I often just refer to the non-HD channel to watch a show. This only seems to happen on certain channels, not all. Also have a problem with accessing non-HD channels, channel appears 'frozen' then I get a message that states "channel should be available shortly". All of these problems are on the HD digital terminal. Other two boxes in the house are non-HD and do not seem to have that problem. Is it the cable box? TV? I re-boot the system often, but this seems like a band-aid solution to a problem that didn't exist a year ago.