I've been having some trouble with Expose performance being somewhat jerky in the "all windows" mode. It usually expands fine, but when I select a window that isn't in the application I'm currently in, it will frequently be jerky/stutter. This will even happen with 4 windows open (sys prefs, Mail.app, and Safari x2). I've had Activity Monitor open during the time, and CPU usage doesn't seem to hit anywhere near 100%, so I'm slightly confused as to what is causing the performance hit. I don't have anything special installed, and nothing sizable ever running other than maybe iTunes. RAM usage seems to be ok, with plenty of "Free" and "Inactive." I'm running on a 1.25GHz AlBook with 512MB RAM... Shouldn't be having any trouble. Any ideas?