So for right now I just threw in the disc and did the install over Leopard. I'm not noticing any HUGE differences, but I'm enjoying the overall feel.
SL has been installed for about 30 minutes now and it's doing great.
You're done??? What's the difference in the space left over on your drive? Big difference? How is the machine running? How fast is it booting up? etc., etc., etc. You know what we want to know... come on give us all the scoop.