Anyone ever heard of a problem of only one game disc not spinning? I bought a new copy of Gran Turismo 4 today, for PS2. It would not fire up in the player. The disc was not spinning. Tried about 6 others games, all are OK. If I pop the lid after putting the GT4 disc in, I can see it moved a bit, but clearly wasn't spinning (other discs are spinning if I hit the eject button). Target let me exchange for another new game disc - same exact thing. This makes no sense. Is the player looking for something that causes it to spin? It doesn't appear defective, scratched, mis-shaped, but The disc does feel heavier, that's the only thing I noticed different. thanks for any ideas.