I have a S2DT with Comcast analog standard cable. The system works fine - except lately channel 2 is unreliable, while all the other channels are rock solid. The coax cable plugs directly into the Tivo, and the RCA connectors plug into the TV. There are no other splitters or anything on the coax line - it's a direct connection. Channel 2 lately has been showing some faint horizontal lines, and the signal appears to come and go. No static or snow.... just here, and then Tivo blue screen. Thought it might be a Comcast problem, as we have channel 2 here in Chicago, and it might be direct RF interference. So, this morning, I wanted to verify the Comcast problem, and see how the channel 2 signal goes away..... it gets more interesting. I unplugged the cable, and plugged it into the TV just to see what would happen... On channel 2 - same faint horizontal lines, a little shakey, but the signal never went away. All the other signals show rock solid. So - There must be something going on with the Tivo tuner and a signal threshold or sync or what ??? that is causing the Tivo tuner to drop only channel 2, and then re-acquire it. I need to get this resolved before the new season starts.... CSI, The Unit, Criminal Minds, Numbers, etc ideas ??