Mitch57,
I have that sony unit on Charter Communications Cable here in Michigan and find the TV guide and channel listing, at times, can be a drag. When I first installed mine the unit searched for all the channels on the cable and it took 5 days before the guide appeared.
Remember that unit has a cable card slot that will be required if you want any of your CATV digital channels and the cable companys channel line up. An example would be before I had the card installed I could not receive the CBS-HD channel from them. I could get it from the OTA antenna. After the card was installed, all their channels were available.
As for the TV-Guide, I have been waiting 3 days for it to "reload" after a power outage. I wish it was faster to appear, but it does not appear to be.

KKM