Approximately 2 weeks ago, my Tivo Premiere stopped being able to tune a set of local digital channels received over cable. DVR Diagnostics reports that it can get a signal lock, but no program lock. Channels not tuned are 607 (WKOWDT), 967 (WKOWDT2), 966 (WKOWDT3) in Madison Wisconsin over Charter Cable. These are the digital cable channels of the local ABC affiliate. When trying to tune to any of these channels Tivo reports "Problem with the signal on this cable channel. Trying again." Have tried waiting, restarting Tivo, and restarting tuning adapter with no success. All other channels are working fine, and I can receive these 3 channels directly on my TV, so the problem seems to be specific to the Tivo Premiere. Can anyone else in Madison confirm a similar problem? Any ideas for a solution?