I was adjusting some settings on my Panaonic TV this morning and I happened to notice that, at the edge of the screen (in the area that is painted black) there are some scratches or cracks (can't tell which) in the top left hand corner. They run horizontally from the left edge and then turn downwards. They stop just at the edge of the painted out area. They are definitely not on the front layer of glass which makes up the flat screen, but on the glass of the tube. Should I be concerned about this (beyond the fact that it is annoying that my new TV has cosmetic damage)? EDIT: I've just looked again and I can see black wiggly lines (scratches) on the viewable area of the tube when the set is switched off.