Hi, It also happened to me when using an HP Cloud / EC2 image: the VM is in English and when trying to change language to Spanish, I'm reproducing this bug. Running as root, as explained by Jakub, works fine, and I've been able to switch language.
Fabrice ** Changed in: language-selector (Ubuntu) Status: Incomplete => Confirmed -- 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/846572 Title: gnome-language-selector crashed with DBusException in call_blocking(): org.freedesktop.DBus.Error.UnknownMethod: Method "SetLanguage" with signature "s" on interface "org.freedesktop.Accounts.User" doesn't exist Status in “language-selector” package in Ubuntu: Confirmed Bug description: Nothing more writing on terminal and this error appeared ! I have two layouts: Ara, En ProblemType: Crash DistroRelease: Ubuntu 11.10 Package: language-selector-gnome 0.51 ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2 Uname: Linux 2.6.38-8-generic i686 ApportVersion: 1.22.1-0ubuntu2 Architecture: i386 Date: Sat Sep 10 15:16:31 2011 ExecutablePath: /usr/bin/gnome-language-selector InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007) InterpreterPath: /usr/bin/python2.7 PackageArchitecture: all ProcCmdline: /usr/bin/python /usr/bin/gnome-language-selector ProcEnviron: SHELL=/bin/bash LC_MESSAGES=en_US.UTF-8 PATH=(custom, no user) LANGUAGE=en_US:en LANG=en_US.UTF-8 PythonArgs: ['/usr/bin/gnome-language-selector'] SourcePackage: language-selector Title: gnome-language-selector crashed with DBusException in call_blocking(): org.freedesktop.DBus.Error.UnknownMethod: Method "SetLanguage" with signature "s" on interface "org.freedesktop.Accounts.User" doesn't exist UpgradeStatus: Upgraded to oneiric on 2011-08-24 (17 days ago) UserGroups: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/language-selector/+bug/846572/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp