Somehow my FileVault image became corrupted, and I could not login. The following steps helped me get things working again.
First, login as the root user -- you'll need to enable root (Pre-10.5, 10.5). On your hard drive, find this file: /Users » username » username.sparseimage; it might instead be found in /Users » .username %raquo; .username.sparseimage, where username is the short username of the user with the corrupted image.
Make a copy of this fiel for back up purposes, in case something goes wrong. Of course you can try to mount it, repair permissions, etc., but I was not able to do this.
Next, reboot your machine from the DiskWarrior CD. In the DiskWarrior window (in t...