Are the permissions correct on 'su' ?
Can you try running postinstall and etcupdate?

On 4/2/06, Rub=E9n Gonz=E1lez Arnau <ruben@cirdanetireth.com> wrote:
> Hi, upgrading to 2.2 to 3.0_STABLE su and passwd does not work, I assume
> that problem comes from pam auth, no idea how to fix it.
>
> su workd fine with users, but it does not work with root!
>
> # passwd
> Unable to change auth token: Module is unknown
>
> # su
> Undefined symbol "_openpam_debug" referenced from COPY relocation in su
>
> Any idea how to fix it?
>
> Thanks in advance
>
>