We noticed a mark on the bottom right corner of our Panasonic TV, the wife tried to wipe it off wondering what it was. It seems as though the actual frame has melted slightly, and there's a small like an oily mark on the screen too. I just wondered if there's anyone who's heard of this before, the set is working fine so I haven't a clue? I moved it last week when I decorated behind it, but you can't really go wrong putting all the cables back. I've been looking at getting a new one, that's a minefield as there's that many to choose from.