Ever since installing Tiger, I've noticed that my computer (specs in sig) intermittently has times when the graphics/video become horribly slow. This occurs in games (video-intensive or not), iTunes visualizers, finder navigation, Safari, etc. According to top, I can get as many as two pageins/sec by simply moving a window around! No program/task seems to be taking an inordinate amount of memory/cpu, so what would cause a bottleneck at a random time? Now, I may not have a ton of memory, but I'd hope it'd be enough to reduce these bottlenecks. This was never a problem before Tiger. In addition to the specs, I have nearly 217GB of space free on that drive, and at a normal state I'm running with about 170MB of RAM free and about 5.5 GB virtual memory. Is there any big memory gobbler in Tiger I could turn off? I'm running with limited widgets. Is it possible that my second (older) hard drive could be causing the problem? Perhaps iDisk auto-sync?