[Bug 4738] user privileges affecting adduser component and sudoers

[teaker1s]

Public bug reported:

affects both kubuntu and ubuntu

system-administration-users and groups (adduser)
the permissions on the different users keep changing randomly-for instance a system administator suddenly has all privilages removed.
secondly login fine with kde login manager or command prompt no gui fine
lock the screen in either kde or gnome and put your password in and it's denied but you can control-alt-backspace and login fine

** Affects: gnome-system-tools (Ubuntu)
     Importance: Medium
     Assignee: Ubuntu Desktop Bugs
         Status: Unconfirmed

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user privileges affecting adduser component and sudoers 
https://launchpad.net/bugs/4738