Well, its been 7 months since I bought my MacBook and I absolutely love it. It's been the best computer I've EVER owned. I had a Dell XPS M140 before. It was nice, but I had to format the HDD ever 2 months or so just to wipe away the messiness Windows left behind that bogged down the computer and made it slower. Now, I don't see any point in formatting my computers and re-installing the os just to get better performance out of it. By this point with a Windows computer I'd start punching the screen in hope that it would make it run faster. While I don't think I'll ever get to that point with this computer, I think it is running a bit slower than it use to. I just ordered 4gb of RAM that should be coming in any day now, but what I'm asking is how to get the maximum performance out of my computer. What do I need to delete, or repair to make it run just as fast it it use to?