Ho finalmente avuto tempo di leggere l'approfondita recensione di Leopard su Ars Technica. Trovo che Time Machine (realizzato tramite FSEvents) sia una cosa splendida:
With the addition of a public API for asynchronous file system
notifications, Mac OS X has finally achieved feature parity with BeOS
in all major areas of file system technology. [..] It's often seemed as if Apple has had to be dragged kicking and
screaming into the future of file system technology, but at least it
has finally come around.