I've had a weird problem occur a handful of times this weekend. For some reason, my Peryn MBP will all of a sudden get very "Jerky" and Sluggish. That is, it doesn't run as swiftly and smoothly as before. When scrolling over the dock, it takes a few seconds before the icons respond to my mouse's movement (I.E. they don't magnify right away). Also, when typing, the letters have a significant delay before showing up. Finally, the computer becomes very sluggish in responding. clicking on a minimized program in the dock requires up to 20 seconds before it expands. It's very weird. All I have running currently is quicktime player (With Flip4Mac), iChat, and a few preview documents open. This is a 4gb machine, 2.5ghz. The disk's permissions ahve been repaired. It seems the only way to reverse the sluggishness is restarting. Any Ideas???