Hi, anyone point me in the right direction with this one... Over the last couple of months we have started to get picture breakup / pixellation. It comes and goes and can go for a week with no probs then it comes back. When we are suffering the problem it seems to go away if i switch to a premium channel - Sky movies / Sky sports etc... BBC / ITV / Cbeebies etc are badly affected. We have swapped the LNB / checked alignment etc. and all is well. Signal strength is 100% / Signal Quality is about 75% and stays at 75% even when the picture is breaking up How do i go about getting to the bottom of this one?