unix_checkpwd[980]: password check failed for user (jonathan)

Wed Sep 15 01:09:31 UTC 2010

Subject is the error line I get when I try to change a password from
single-user mode. I got the same error last time I tried to install
Fedora 13 with the same situation. I can't log in as a user or as
root, nor can I change the passwords.

It's a Gateway MT3421, if it matters. AMD Turion64 with 2gb of RAM.
I'm installing the i686 version for Skype and Flash, but it should
still work.