I am a recent apple convert with a new Powerbook DVI 667. I was playing both Civilization III and Tropico this weekend under OS X, and in both of them when the scenarios became reasonably complex the games bogged down tremendously, becoming almost unplayable. Even with "Hardware acceleration" in Tropico it was too slow to play. This is really frustrating on a new machine; on a whim I booted into OS 9 and tried Tropico from there - the game was great - it really zoomed. Has anyone else had this experience? If the slowdown is OS X, does anyone know if Jaguar will improve gameplay? I've ordered another 512 meg DIMM, I suppose that will help to some extent.