Leopard’s Finder has a glaring bug in its directory-moving code, leading to horrendous data loss if a destination volume disappears while a move operation is in action. I first came across it when Samba crashed while I was moving a directory from my desktop over to a Samba mount on my FreeBSD server.
http://tomkarpik.com/articles/massive-data-loss-bug-in-leopard/
É um bug de putos. E a ser verdade que se mantem desde o 10.3 só demonstra como nem sempre a maçã faz a coisas como deve ser.