Not sure if this is the right forum, sorry if not. On DTV NickHD channel I have been getting a poor picture for the last week or so. The picture breaks up every 30 seconds or so (pixelation I guess) and will often deteriorate to a kind of washed out white picture. Obviously I have not watched EVERY other channel but I am not noticing this on any other channels. Using an HR20 to view. Thanks for any info.