My MacBook Pro (OS X 10.4.8) has suddenly locked me out! When I try to log in (only one user, with admin privileges, FileVault switched on) it rejects the login saying "You are unable to log in to the user account "Adam" at this time". (Read on: it gets worse...) I'm certain the password is correct (and correctly typed, no caps lock, keyboard working properly etc.). When it lets me use the master password to change the user password, and I try to do so, I get the same error message and cannot log in. If I boot from the OS X installation disk I can repair the hard drive (no errors found) and repair file permissions (a few repaired) and I can (apparently) change the user password. But when I reboot from the hard drive and try to log in, with either the new or the old password, I cannot. I see that the error message ("You were unable to log in...") was introduced by Mac OS X 10.4.6 Update (delta), and it appears when trying to log in as a FileVault-protected user if the protected Home image file has been damaged or moved. This makes sense. If I type in the wrong password I get the shakey thing. The right password gives me the error message. Any suggestions? I really don't want to reinstall OS X as it'll be a major task and I've done a significant bit of work since my last backup. Is there some way I can create another user as a workaround, or restore whatever's damaged, or something? A solution to this would save me a day or two's work so I really hope you can help!