The cable feeds can vary widely IME. Channel to channel, provider to provider for sure. No HD feeds are perfect, but some come awfully close. YMMV.
It would also help to know which HDTV & Cable box you are using(?)
I just brought home an lcd tv for the first time and had a question about how it is supposed to perform. First of all the picture watching HD channels is usually spectacular, I can get enough of it. However, every once in a while the picture loses integrity under certain conditions and I get an outline around a moving person or object, and even pixelation which was particularly intense during one scene where the background was very bright white and moire-like and the subject was moving in front. But then most moving objects and bright patterns are fine, this happens only rarely. So, am I supposed to be getting perfect pictures with zero artifacts all the time or are occasional artifacts like this normal while viewing lcd tvs, or is it the cable reception? Should I return this and try another set? Any information would be appreciated.