I found this in debian bug reports: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=690337
it may be of interest ** Bug watch added: Debian Bug tracker #690337 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=690337 ** Changed in: unity (Ubuntu) Status: Invalid => Confirmed -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to unity in Ubuntu. Matching subscriptions: dp-unity https://bugs.launchpad.net/bugs/957641 Title: unity does not display authentication window for pkexec Status in “unity” package in Ubuntu: Confirmed Bug description: The /usr/share/applications/gnome-system-log.desktop file recently changed to have "EXEC=pkexec gnome-system-log", and now it is not possible to run it from the unity launcher icon or from the 'matching applications' list in the dash (note that it matches 'log file viewer' and not 'gnome-system-log'). No error is displayed anywhere that I can see (eg in ~.xsession-errors). Running 'pkexec gnome-system-log' from gnome-terminal prompts the user for authentication to get sudo privileges, so it appears likely that either unity tries to run the command and it fails, or runs it but doesn't display the authentication window. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: unity 5.6.0-0ubuntu4 Uname: Linux 3.3.0-rc7-git-20120316.1313 x86_64 ApportVersion: 1.94.1-0ubuntu2 Architecture: amd64 CompizPlugins: [core,composite,opengl,decor,mousepoll,gnomecompat,imgpng,snap,grid,wall,move,place,vpswitch,session,compiztoolbox,extrawm,resize,regex,animation,workarounds,unitymtgrabhandles,expo,fade,scale,ezoom,unityshell] Date: Sat Mar 17 10:27:11 2012 EcryptfsInUse: Yes InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) ProcEnviron: LANGUAGE=en_AU:en TERM=xterm LANG=en_AU.UTF-8 SHELL=/bin/bash SourcePackage: unity UpgradeStatus: Upgraded to precise on 2012-03-13 (3 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/957641/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

