I'm a new user, and just got an iBook G4. I know this is probably a newbie question, and that it may have been asked before, but I'd like to know what OS I should put on my new laptop. It has a 1.2 Ghz processor, and 768 MB of RAM. Would the benefit of speed outweigh the fact that Tiger's been deemed unsupported by Apple, or should I just stick to Leopard? All my apps work on Tiger, and the only problem for me is running a potentially dangerous operating system.