Ever since I've had dish, I've noticed how poor a quality CNN SD is. Has anyone else noticed how low resolution/blocky this channel is? Even on my CRT set it looks blocky, espeically on people's faces that are in movement/talking. There are plenty of other SD channels that the digital artifacts are not this noticeable or apparent. Is this something I can fix or is it just the way it is? MSNBC and Fox news aren't this bad.