My MacBook is from the Summer of 2007, so its not the newest one but the last model, a black one. Basically, it just runs slowly. Sometimes i'll boot it up and just dragging icons can be really choppy and opening files or just double-clicking the Mac HD icon will cause that spiral of colors to pop up. It isn't always super slow but I would say that my mac is a lot lot slower than it was in the first 6-8 months I owned it. It has 1gig of memory and it isn't like I have lots of programs running at once (if i was i would understand it being a bit slow) My guess is just from going to websites, cookie build-up, maybe the hardware is just againg, pop-ups, pornography, or whatever is just causing it to slowwwwwwww down. I'd like to not have to reinstall the os and i'm at school anyways so i dont have the disc for that. Any idea what I can do??