Well, if it's any consolidation, TWC will implement their Switch Digital Video (SDV) feature starting the 15th. For the most part, this will effect most of the HD channels and some of the lesser watched SD channels. Basically, SDV holds all the HD channels in a local hub so that it is not constantly streaming into your home, and it will only come into your home when you enter that channel in. There will now be a slight delay before the picture shows up due to it "switching on." I've heard this helps with the freezing of the channels since now it has a stronger signal strength.
Oh, and the only reason I know about this stuff is because I have a Tivo and due to this new SDV I now need to get a tuning adapter so that we can see these channels that we wouldn't otherwise see with a cable card alone.