I have U-Verse and am having the lip sync issue as well -- but only recently, within the last week or so. Very annoying. I found that it sometimes goes away if I change the STB sound setting to stereo rather than surround (in the U-Verse menu)... but not always.
I switched about 2 years ago from Charter cable. I had such a horrible experience with them that I would *never* go back, unless they made me an offer I couldn't refuse. Constant picture blocking/freezing, frequent service outages, the worst customer service and useless techs. I had them out ot my home at least a dozen times over 4-5 years and each guy that came would basically undo the last guys changes. Rinse, repeat. But the worst thing of all was the weak HD offerings -- when I first signed up for their HD pkg I think they offered 4 or 5 HD channels: Discovery HD Theater and a few networks. ABC was not one of them. 3-4 years later when I switched I think they were up to maybe 7 or 8 channels. Lame. And that cost an extra $10/mo.
No experience with sat because I get no reception here -- in a very hilly wooded area.