Please, drop the is_admin check completely. I said it already: "you cannot know whether the user knows the password of an admin account if you do not ask for it". If you try guessing, you will inevitable guess wrong sometimes and frustrate the user. This is also true if polkit does the guessing.
If you do not want to confuse user with admin buttons, then, either put a lock symbol on all of them, of grey them out and add a single unlock button just like the time settings dialog. For the check for missing packages, you can just add a button "check for missing packages", or run the check when the user clicks the unlock button. Or you convert the popup that asks the user into a text and button in the language dialog, something along "Missing packages detect. [<lock icon> Install them]". This solution is easy to implement, does not require new polkit features, has a clear, obvious, ui, and does not get in the way of users by hiding things from them they would like to see. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to language-selector in Ubuntu. https://bugs.launchpad.net/bugs/1008344 Title: checks "admin" group membership instead of querying polkit Status in PolicyKit: Confirmed Status in “language-selector” package in Ubuntu: Triaged Bug description: In a new install of Ubuntu Precise, I cannot make any system-wide changes in the language selector (such as installing languages or clicking "Apply System-Wide"), only user-specific changes. All those controls for system-wide changes are greyed out, although my user does have sudo abilities and I would be able to enter the root password of the machine. The machine is freshly installed, but with customizations specific to our site, e.g. ldap authentication for users. Specifically, my user is an ldap user, not a local one, and there is a group in the ldap directory which was granted sudo capability by adding it to /etc/sudoers. My user is part of that group. sudo on the command line and gksudo work fine. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: language-selector-gnome 0.79 ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16 Uname: Linux 3.2.0-24-generic x86_64 ApportVersion: 2.0.1-0ubuntu8 Architecture: amd64 Date: Mon Jun 4 08:20:04 2012 PackageArchitecture: all ProcEnviron: LANGUAGE=en_US: TERM=screen-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: language-selector UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/policykit/+bug/1008344/+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

