I just noticed a disturbing problem last night on my new Dual Tuner Series 2.
My digital channels - mostly what you'd call the "movie channels" - HBO, Showtime, etc. - seem to freeze/pixelate (mostly just freeze, I only saw pixelation once when first tuning to a channel) for about 3 seconds every minute or two. Needless to say, this makes watching a movie very, very annoying. Oddly enough, this doesn't seem to happen on analog channels (below 100).
I'm using a Scientific Atlanta cable box with Bright House Networks. Not sure of the cable box model without looking it up, and I'm not near it at the moment.
I seem to recall this happening a long time ago, on a standalone Series 2 I was using, but a later TiVo software update corrected it. Now, with the S2 DT, it seems to be happening again.
Could this be a TiVo software issue (I'm running the latest "summer update"), or something that needs to be looked at with Scientific Atlanta cable boxes?