[timmy2]

I'm a PC guy being asked to help a Mac-owning friend. Her G5 running Leopard is acting very squirrely: iTunes keeps forgetting its tunes and complaining about damaged libraries (even after a uninstalling the old and installing the newest version); Photoshop crashes when scrolling through a folder of pictures (I moved them to a different drive and that solved it, but...), and other odd behaviors. She messed up the configuration of TimeMachine a while back and says lots of stuff seemed to go wrong after that. She has 2 internal drives and I noticed that some of her apps, like Quicken, appear to be installed on the second drive. Data files appear to be strewn about everywhere.

Her fellow Mac friends said the system needs the OS re-installed. On a PC the best approach is to reformat the drive and do a clean install. Is this advisable on a Mac -- especially this one?

Thanks!