Okay. I preordered Leopard on Amazon, so it won't be coming until Monday or Tuesday, but I have a question about backup prior to a clean install. Basically all that i want to save are my applications and my music. Would i be fine just dragging my applications folder and my music folder onto an external hard drive and then back after the leopard clean install. will i lose my application serial numbers? will my itunes songs still be registered? will i face any problems? i've heard that it is suggested to use carbon copy cloner, but i only want to save my applications and my music. nothing else. thanks.