GUI Printer Configuration doesn't use PAM/LDAP

[LinuxKrn]

Binary package hint: system-config-printer-gnome

Ubuntu 8.04.1
system-config-printer-gnome 0.7.81+svn1976-0ubuntu9

The gnome printer configuration is not LDAP/pam aware and only checks local files for group/passwords.

I am using LDAP for authentication. My user is in the "admin" group and has permissions via sudo. Other authentication systems on ubutnu hardy (8.04.1) work as expected.

When I try to make a change via the GUI tool, I get prompted with "Password for <username> on localhost?"

It does not accept my password, nor root password.

Problem:
system-config-printer appears to check /etc/group for admin group membership, instead of using system calls to pam. Since I am using LDAP, my admin group doesn't exist in /etc/group but via LDAP.

Again, all other ubuntu administration works via pam/LDAP. (sudo/gksudo, update manager, etc) And I have verified that my user is a member of admin (group 115) via 'id' and 'getent group admin' via shell.

Workarounds:

1) If I manually set a local admin group in the file /etc/group, add my username to it, then it works. LDAP already has an admin group and therefore the desired list of members have to be manually set on each box.

2) If I run gksudo system-config-printer, this uses gksudo that works with PAM/LDAP to bypass the bug.

Thanks