I have a 1GHz titanium G4 Powerbook with 512MB RAM, and in the last couple years or so, it's started to show its age more and more. I see the pinwheel a lot, it runs a bit hotter than I remember, and the fans are noisy. It's been suggested that I clear my hard drive, and re-install the OS. The problem is, my optical drive won't burn anymore, and it doesn't read everything. I can't afford to replace the optical drive right now, but I'd like to be able to make it run a bit more smoothly, like it used to, and I don't want to lose my important stuff. I do have an external HD with enough space for most of the important stuff.