Thanks dsskid. The reason I asked is because I have been playing with settings on my new TH-42PZ700U TV. The last thing I did was turned off CATS but then turned it on right away. Since a couple of days, I have been feeling that picture appear a little blurry or noisy. At close-up, I see a little bit of shadow, if that is the right term, similar to what you would see if you had an antenna which wasnt properly aligned or set. That is more noticeable if there is text on the screen. This is not so noticeable at the usual 10-12 feet distance. By the way, I am referring to HD channels, not SD programming.
So I was concerned if I messed up settings on my TV. However, I have satellite box from dish network and so this may be due to the signal and not TV or it settings. I don't have HD DVD or other HD sources to confirm this, however.