I have the Wega XBR-450 and both sides of the set show thin vertical stripes of off colored lines i.e. they show up as greenish on a white background. There is a region of these for a few inches in from the edge of the right hand side of the screen running the full vertical height. Moving images with a light background shows this best. The area looks as if it is a different color/brightness than the rest of the screen. I've read about color purity problems before but I thought they were blotches or areas of discoloration but not so distinct as being perfectly straight discolored thin lines. Anyone have any idea what this is?? Any help would be greatly appreciated since my exchange/return period is coming to an end. Thanks a lot.