I had the same problem for about the first week (Also Cox Phoenix). After that it settled down. In the process of trouble shooting the problem I un-hooked the off-air antenna since most of the off-air stuff was duplicated in the cable lineup. No problems since. My 2nd S3 was connected to off-air and analog cable with no cablecards. This Tivo did all kind of wierd things. The second tuner would randomly just show 'no signal' from cable or the antenna source. When tuner 2 was working it would intemittently show lines in the picture as well as strange color band in the analog picture. While troubleshooting the problem with Tivo on the phone we managed to get both tuners 'stuck' on a channel. The banner would change, but the picture was stuck on whatever channel it was displaying. It would have been funny if this wasn't such an expensive toy . Tivo is exchanging this box and as far as I know the replacement is on the way. Here's hoping for a referb with an orange display .