I am using Final Cut Pro on my MacBook Pro (Early 2008 Model) with a 2.4ghz processor and upgraded 4gb ram. I recently installed Final Cut pro, and initially it seemed to work ok, but now after about a week of having it, everything seems to make it go slow. If I bring a clip into the timeline, I get the beachball for a while, the same goes for clicking anywhere on the timeline after the clip is placed. The render time seems to be much longer than it should be also. I checked the activity monitor throughout all this, and it says I am only using less than a gig of total memory, and have 3+ gb free. I am running minimal programs (just after a restart) yet it still runs incredibly slow. Also, my harddrive still has plenty of space on it, (more than 50 GB) enough to handle Leopards temp files. Any thoughts as to why it is going so slow, and what I can do to fix it?