policyui.py crashed with DBusException in call_blocking()

Binary package hint: screen-resolution-extra

This happened after I unchecked 'Mirror screens' and clicked Apply. I was presented a dialog explaining that in order to do this, it had to increase my 'virtual screen area'. I clicked Authenticate, and was given a password challenge. I entered my pw, but it seemed to not respond well. It hung for a few seconds, then the Mirror Screens block came up in the upper-left side of the screen. [see screenshot]

I rebooted and performed a full update, tried again, and it is repeatable. Can't get dual screens to stop mirroring.

Karmic Koala, Dell 960 w/ATI card
I have installed the ATI/AMD proprietary FGLRX graphics driver from the Hardware Drivers wizard.

ProblemType: Crash
Architecture: amd64
Date: Mon Oct 19 16:02:59 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/share/screen-resolution-extra/policyui.py
InterpreterPath: /usr/bin/python2.6
NonfreeKernelModules: fglrx
Package: screen-resolution-extra 0.11
PackageArchitecture: all
ProcCmdline: python /usr/share/screen-resolution-extra/policyui.py 3360x1050
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
PythonArgs: ['/usr/share/screen-resolution-extra/policyui.py', '3360x1050']
SourcePackage: screen-resolution-extra
Title: policyui.py crashed with DBusException in call_blocking()
Uname: Linux 2.6.31-14-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare