I think banding is the wrong word, but a buddy of mine got his macbook pro 15" back in May and every once in a while, from the bottom of the screen, are these columns of "light". It's almost like a glow from the bottom of the screen, like a cheap backlit display, where some areas are brighter than others. It's very noticeable, not a little thing. But it only occurs at the bottom of the screen. Is this a part of the graphics card problem or somethings else? sorry i dont have a picture.