I have the same problem on my mac as well. I had changed the password because there was an unauthorized person using it. Problem i had is instead of retyping the whole new password, I just added to th end of the one showed. Yes it was just a bunch of dots but anyways. I tried using the master password but it seems it was changed as well so now I do not have either. Now I DO NOT have file fault turned on and the version of osx is 10.3.9. Will these same steps apply? And what if the cds i had with it got trashed by a couple of little people whom discovered they made good frisbies... I cannot loose the info. I do have a couple of cds from a g4 running 10.4... but they do not want to seem to work. I am so lost and will be in the dog house if I cannot get this ibook to work again.