When watching sky 1 hd and eurosport hd through my panny th42px80 it sometimes clips about a fifth of the picture from left and right sides, when the ads come on the whole screen is filled but when the program restarts its back to black lines at the sides. I have my aspect control set to auto and tv is connected via hdmi. Does this happen to anyone else? can it be sorted by any means other than zoom mode 2 on the aspect control? any help greatly appreciated.