I cannot believe it. I just upgraded from a 100gb 7200rpm hard drive in my 12" Powerbook, maxed out ram at 1.25gbs to a 250gb 5400 drive. And now I do not even have enough memory in Leopard to open DVD player? Geez louise, even on an old iMac G3 with 512 ram, I could play a movie! What is going on here? I closed down everything, repaired permissions and emptied the trash; even shut off Time Machine. Activity monitor SPIKED when I tried to open DVD player, then beachballed. I don't get it. Do I have to downgrade to Tiger just to watch a movie?