On 2011/12/05 16:11, KReitz so eloquently wrote: > I wonder if others here have experienced this kind of problems from their G4 > upgrades and those running Leopard. Perhaps it's best to stay with Tiger so I > am researching options I don't have any experience with the CPU upgrade but I did have problems with Leopard when I upgraded from Tiger. Going back and doing an archive & install instead of an upgrade solved my Leopard problems. Good luck, Tina -- Acceleron: HP Presario 2.8GHz Celeron D 2GB RAM Discrete graphics XP Pro Luxo Jr: iMac 20" USB 2 1.25GHz G4 2GB RAM GeForceFX5200 Ultra 64MB VRAM 10.4.11 Worm: PowerBook G4 15" HR-DLSD 1.67GHz G4 2GB RAM Radeon 9700 128MB VRAM 10.5.8 Quadrophenia: Mac Pro Mid-2010 2.8 GHz QC 6 GB RAM Radeon HD 5770 1GB VRAM 10.6.8