If Leopard runs at least as well as 10.4.11 on my QS800 then it'll be worth upgrading, because in due course there will be stuff that is Leopard only (and besides my wife has a G4 laptop that can run it too). However, if it is slower or buggy on unsupported machines then I'll just have to live with 10.4.11 until I upgrade in 5 years time. Regards, Charles On 5 Dec 2007, at 11:58, g4-request at listserver.themacintoshguy.com wrote: > That requires an objective decision on each individual's part. > > Are you satisfied with the performance of the older machine? Can you > afford a new and faster machine? Are you willing to upgrade peripheral > devices and software if you upgrade the OS? Do you really need OS-10.5 > on your machine? 30 30 40S 151 39 25E