I was just wondering because this is weird... I recently noticed a red spot in the middle of my screen (a Panny 47wx42), about 1/16 in diameter. I called the authorized repair shop, they came out and told me that the spot is in the green projection tube and that the tube needs to be replaced. They ordered a new tube, then took the TV in and made the switch. The replacement tube had the same problem, so they ordered another one. Finally the second replacement tube arrived, they replaced the first replacement and brought my TV back. Guess what? Same problem again, except the spot moved. I called the store again, and they are really scratching their heads. They told me that the spot appears to be residue left in the liquid used to fill the projection tube. They think that their distributor might have gotten a bad batch of tubes, and are going to call Panasonic tomorrow to order a tube directly from them. Then of course they will need to take my TV in again. Thank God the TV is still under warranty. I was wondering if anyone has ever had the same problem or is it that I'm just lucky?