Duplicated user in authentication dialog

[Lupe Christoph]

This is possibly a duplicate of bug #696693. But that doesn't mention multiple entries for the same user, and it doesn't include a screenshot, so I can't know.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: polkit-kde-1 0.99.0-3ubuntu5
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
Uname: Linux 3.2.0-29-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.0.1-0ubuntu12
Architecture: amd64
Date: Wed Aug 15 11:30:30 2012
ProcEnviron:
 LANGUAGE=
 TERM=xterm
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: polkit-kde-1
UpgradeStatus: Upgraded to precise on 2012-04-29 (107 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[S. Christian Collins (s-chriscollins)]

On my system, this was happening because my user was a member of both the "admin" and "sudo" groups. The "admin" group is no longer used by Ubuntu by default (it is "adm" instead), so removing your user from the "admin" group should solve this issue. Your user should still be a member of the "adm" and "sudo" groups, though.