There's a line down the middle of our plasma that we just got, this only seems to show up on face tone colors. Didn't notice it when we first turned it on. This happens on all sources, regular standard def TV, XBox via HDMI cable. Does anyone know why this is happening? I did not buy the extended warranty, so how good is Panasonic about fixing my TV? It's heavy, and it's wall mounted, so it's not going to be fun if I have to take it down.