I am having pixelization on channels 5, 8, and several others the past couple of days. I see it every 10-15 seconds. Even the sound sometimes gets garbled. Other channels seem to be great. This happens to the TVs using the contour box as well as the mini-boxes. I have checked the ground connections outside (found it disconnected about a month ago) and they are good. I have loosened and retightened the connections outside and inside. There is one splitter inside (cable modem and tv) that has been swapped out. I removed all the other splitters a few months ago when I put in a 8-port amplifier in place of the original 4-port amplifier (with splitters). I'm not sure what else I can check myself.