user accounts messed up

[Jona Joachim]

Jona Joachim wrote:
> On 21/01/06, Jona Joachim <jona.joachim at gmail.com> wrote:
> (...)
> 
> I created a master.passwd file from the backup file in /var/backups
> and emptied the password field. Then I updated the database with
> pwd_mkdb but I still can't login.

In fact it has nothing to do with the user database or the passwd file.
I reinstalled the base system and I found out the following: If I boot
with the newly installed /usr in place I can login. Then I can move the
/usr folder and mount my old /usr partition, set the lib paths with
ldconfig and then everything works fine. If I boot using the old /usr
partition I can't login and I am told my password is wrong.
I don't get it.