My warranty will be up in a few months, so I have a few questions whose answers will determine whether I go through the horrible process of trying to get repair/replacement from Samsung.
First, my display has four horizontal lines about 1/2" thick that span the whole screen. They look almost like rows of slightly darker pixels. They are most noticeable during vertical movement, or when displaying a light solid color. Strangely they almost disappear when in Game mode.
Also, on the left and right edges there are similar dark lines, but these are vertical and larger, extending about 4" from each side of the screen and spanning top to bottom.