I have today had a Sky+ system installed under the new discounted Sky+ box & mirror sub scheme. Having watched various satellite channels for a while, the picture quality doesn't look to be nearly as good as it was before when using my old Pace digibox. This has been moved into one of our bedrooms, and although it is if difficult to judge accurately as the TV's are hugely different, the picture on this seems to be just as good as it was before. The problem is most noticeable on a white background when there are only what I can call faint diagonal line across the picture. The lines are not obvious on non-white background but the picture appreciably less sharp than before. I did check the Signal Strength and Quality but this is actually higher than it was before the install so I suspect the problem has nothing to do with alignment of the dish. I have been through the basic picture set-up and the settings such as RGB, widescreen , etc. are the same as before. Does anyone have any ideas? Am I missing anything obvious or do I need to call Sky back out? Could it be a problem with the box or even the cabling? Any help or suggestions would be appreciated.