fc4 no users authorized other than root

[dbl06]

when I want to log as <username>, the machine asks for psw and whatever the username the passwd is always wrong. I have tried to kill users and reinstate them with no effect on the problem

[gthill]

login as root and reset the user password

[root@tc4 ~]#passwd myuser
Changing password for user myuser.
New password:
Retype new password:
passwd: all authentication tokens updated successfully.
[root@tc4 ~]#
[root@tc4 ~]#

or to create a new user

[root@tc4 ~]#useradd newuser
[root@tc4 ~]#passwd newuser
Changing password for user newuser
New password:
Retype new password:
passwd: all authentication tokens updated successfully.
[root@tc4 ~]#