I had gotten my Panasonic 45" lcd tv a couple of weeks ago and have been extremely happy so far. Today while watching it I noticed that there is what looks like a perfect green shaded circle towards the top of the tv screen. Does anyone know what this could be? the picture is still showing up its just that it's tinted in this one area. Any advice is appreciated. I'm really freaked out about it and it happened just after panasonics customer service closed for the day so I can't call until tomorrow.