My Powerbook is getting slower by the day and I’ve been thinking of how I might squeeze out a couple drops of speed from what is becoming something of a lemon. My preferred method is to throw this one out the window right after I bring home a new MacBook Air but luckily for my family finances the Wired How-to Wiki has a few tips which might delay the inevitable awhile longer.
While there is no definitive cure-all for making your machine as good (and as fast) as day one, there are some basic things you can do that might help reclaim disk space, remove some clutter and generally speed up your Mac.
Killing unneeded processes and recovering HD space might be the best first choices if a hardware upgrade isn’t an option.
Speed Up Your Mac – Wired How-To Wiki