Hi. I have a G4 Mirrored. with 1 Ghz. 1.5 Ram and 400 Gb DD. I had all Leopard running fine untill some issue with permisions come upa and it would not start, posted it on Macforums but no reply so took it to the apple shop and they reloaded tiger 10.2.8 back on. I have a legal leopard copy to install but when I do so it just goes pat setting your language and then a small cell drops down and says "You can not install this OS on your machine" try updating your firmware which I have no idea how to do on a G4, I have done it on a Mac book pro OK!. So I cn't use iLife or iWorks as it won't accept them, PLEASE can anyone help me to get leopard back on it again. Thanks.