Sony's Official Statement

"Sony's Bravia LCD line of televisions are among the brightest and most color rich televisions in the world. To achieve this level of performance Sony utilizes a brighter backlight output and setting. With this exceptional brightness, under certain dark viewing conditions, especially blank screens with no video source, the backlight may exhibit a slight unevenness of uniformity. This condition is not usually visible under typical conditions such as watching movies or general television programming and should not affect your viewing experience."