Hi, Thought i'd post this earlier! Any other owners of iBooks G4 1.33Ghz nervous about upgrading to Leopard? If any one of you have actually installed it, how does it perform? Do you see any visable lagging etc? Or is it smooth as butter? I've got a 1Gb RAM in there but i doubt it'll make much of a difference? Either way i'm hesistant to upgrade because it just seems that Leopard was made for Intel processors and those of us who are still with G4 processors are in the far end of the spectrum for Apple.