I'm running on an ibook G4 10.4.11 Tiger and I want to upgrade. Alot of downloads now won't allow me to since I'm outdated - way outdated. What would be best for my next step up?? Leopard, snow leopard? the only thing I do on this laptop is internet searching, facebook games, email. Firefox won't let me upgrade any higher than the 3.6 right now. It says my system won't allow it and I need to upgrade. thanks for any info and help on this.