Hi, I am trying to find the serial number of my girlfriend's iBook but it is not where I would normally find it. Under the 'About this mac' pane the Serial Number is blank, as it is under system profiler. I have also checked for the label in the battery bay and it is not there. The only think I can find is a label on the underside of the keyboard, no the frame of the laptop. I don't think that is the serial number, according to the Apple website it should be in the battery compartment. Any advice as to where else I can look? Thanks.