Anyone else noticing excessive ghost images on dark backgrounds, especially after lighter images or credits are shown? When lettering or any lighter image disappears, it's almost as if it burned an image on the dark screen in the form of gray pixellation blocks. This occurs on all stations, all the time. It is also apparent throughout the show on dark scenes. Of course, it probably also happens on bright scenes, but it is not apparent on light backgrounds. Incidentally, it is not the tv, as it never happens during playback of DVDs. My tv is a Director's series Hitachi 57" Ultravision.