i have a mac power pc g4. My mac meets all the reyquirements to run leopard from what I read. Well I pop in leopard it shows up and I double click the install icon. The huge x appears, tells me to click and the instillation will start at the restart. So the first few times plain and simple nothing would happen. Then after that I restarted and for a few secs the apple icon appears and now a greyish screen appears with a statement in different languages;"you need to restart your computer...." happens every time. Please help.