I'm still not sure you can place the blame directly on Cox, I think it's more of a Tivo issue. In my case, I have an S3 in my main viewing room, and a TivoHD in the bedroom. The S3 has 2 S-cards, the HD has 1 M-card. The S3 never drops channels, but has alot more pixelation issues. The TivoHD drops channels once a month, but never has any pixelation problems. I think the dropping channels has to be a Tivo issue with the firmware, otherwise why doesn't my S3 drop? And my HD only drops once a month based on the expire time, which makes me lean towards tivo firmware as well. But I guess it could always be a Cox problem in resetting that expire time maybe? BTW, I'm in Chandler also.