MacJunky, what are your G4's specs? Remember, dependence on virtual memory will slow anyone down, especially if the hard drive is slower and particularly with Leopard--the enhanced graphics are a definite RAM hog. Max out your RAM to 1.5 or 2GB, and don't attempt Leopard on a Yikes–1GB and a slower processor will drag it down.

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1GHz 7455 Digital Audio, 1.25GB RAM, GeForce 6200 256MB, 500GB 7200RPM SATA HDD(bootdrive/onlydrive), USB 2.0, 350W Seasonic PSU. It is not exactly spectacular, but it is not terrible for a G4.http://poopr.org/images/2oyqf59zfkrtdsq7gafb.jpg

(yes, I know the case is a little big for what i have in there and that the CPU fan is not properly mounted, I want to get another case and mount a different heatsink sometime )

I am just spoiled by having used OS X on a 3.2GHz dual core w/2GB and 3.0GHz quad core w/4GB with modernish Radeon gfx card. Again, not the best and kinda old, but not slow. And both certainly spank most of the real Macs that most normal people use at the moment.

Anyway, back on topic.

Most people do not have loaded dual 1.42GHz MDD systems.