Hello everyone This is my first post here and I'm hoping you can assist me with a problem I am having with my Panasonic TH-42PX75U. I got the set back in December 2007 and in January 2009 (right after the warranty expired) the set started doing what is shown in the attached image. Any idea what this is? It goes away if I leave the set on for about 15 mins or so and it does this on all inputs. Has anyone seen this issue before? Thanks!