I was just casually surfing around for hacking and optimizing a old iBook G3 I just bought for my wife. It runs surpisingly well for common task though its a 500Hmz G3 with 384MB of RAM but it does slow down on some apps. So I found this app called Speed Freak and its pretty cool it controls the CPU usage per apps you are running. Best of all its free. The developer has some other cool Mac apps you might want to check out. Big Fat Stinking Software – Utilities
