I did a search for this issue, and did not quite find the answer I was looking for. I have a TiVo Premiere (1+ years old) that has pixelation issues, but mainly on major networks (mostly nbc). For sample we see the pixelation a lot during America's Got Talent. I thought it was a seasonal thing, since I remember having pixelation during previous seasons of AGT. Now we are starting to see the pixelation on other networks (USA, Bravo).
What are the chances this is cable provider? If it is the TiVo, does anyone have any suggestions?