My family has 4 iBook G4's and 1 MacBook Pro. Recently, our MBP died, so the apple retail store has it until friday. So, I let my dad use my iBook. He decided to do the software update and so on, but when he restarted it, none of the passwords work. I tried all the passwords I use, and all of his. None work. I think he upgraded to 10.4.11. Can someone help me? I really don't want to restore because I have hundreds of purchased songs and movies, and all my iPhone and iPod backups, and all my school work. Help? Thank you, Josh.