17" iMac Dual Core running OSX 10.4.10.
Works perfectly for me.
Won't rate it, since I didn't care much about this screen saver. Found it boring.
But to each his own, it works fine and someone else with a MacIntel might enjoy it.
Very cool screensaver. It is definitely not for everyone, but for those that love watching problems being sold, right on your screen.
I wish there was a way to change the graphics and / or colors.