Finder wouldnt boot anymore but other apps would load. Force quit finder/relaunch didnt work. disk first aid didnt work, fsck -y didnt work. So i installed an OS on an external FW hd, and booted off that to back up my stuff... I just forgot to back up my itunes and iphotos. Some of my mail is missing too, despite saving the mail folders I have an old back up of them but its not the same Now comes the shittyness of finding my serial numbers again, which i can never do.