With almost any LCD panel on the market, there are imperfections when it comes to screen uniformity. However, if the panel seems to be unequally bright on a constant screen (say, if the entire screen is blue, or red), then you may want to have your unit inspected by a service representative.
I got a new Samsung a while back and have recently begun to notice that quite often the edges of the frame are slightly brighter than the rest of the picture. It's more noticeable on B&W films. The right side seems to be perhaps more pronounced than the left, though they've both exhibited the issue.
The thing is, it is only the picture of the DVD or Blu Ray or television station -- NOT the total screen. So, if I'm watching a Full Screen movie, the black bars on the side of the screen don't have the problem.
Is this normal? It's not horribly noticeable and I'm sure I can live with it, but I wanted to make sure this wasn't a defect that I should have checked out. Any help is greatly appreciated!