I have recently purchased a samsung le37m87bdx I have found that part of the picture on the left and right side is missing, I have noticed this on several tv's not just mine, I thought that when I changed from a 4:3 tv i would get "the full picture" but i don't, the tv is 1080p, and i've tried the various settings, but it still happens, is there something i'm missing (apart from the picture) it is not always obvious mainly with text. Can anyone help?