I can reproduce this on Ubuntu MATE 14.04.1 (gnome-system-tools 3.0.0-3ubuntu4) and Ubuntu MATE 14.10 (3.0.0-3ubuntu5). Specifically, the entire program doesn't hang (nor is there any CPU runaway), the "Change User Password" dialog itself becomes unresponsive and can be closed, and the password does not change.
I get less terminal output than @intherye when I run (not getting any output when closing the window): $ users-admin (users-admin:2402): Liboobs-WARNING **: There was an unknown error communicating asynchronously with the backends: Launch helper exited with unknown return code 255 The same happens when I run users-admin over ssh from linux but, interestingly, NOT when I run over ssh from OS X: same terminal output, and the UI isn't decorated (using OpenSSH_6.7p1, OpenSSL 1.0.1j 15 Oct 2014 for macports and XQuartz 2.7.8_beta1 on OS X 10.10.1). ** Changed in: gnome-system-tools (Ubuntu) Status: New => Confirmed ** Also affects: ubuntu-mate Importance: Undecided Status: New -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-system-tools in Ubuntu. https://bugs.launchpad.net/bugs/1299138 Title: [users-admin] User settings might hang when password is too simple Status in Ubuntu MATE: New Status in xfce4-settings: Invalid Status in gnome-system-tools package in Ubuntu: Confirmed Bug description: When changing password in Xfce-Settings -> Users and Groups, and supplying a "too simple" password (e.g. "a12345"), the application might hang. On the first time the application says "Password too simple", on the second try, the application hangs, until you close it. I could reproduce that on two machines (one KVM beta2 and on Laptop ) running Xubuntu 14.04 and one Laptop running Xubuntu 13.10. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: xfce4-settings 4.11.2-1ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-19.40-generic 3.13.6 Uname: Linux 3.13.0-19-generic x86_64 ApportVersion: 2.13.3-0ubuntu1 Architecture: amd64 CurrentDesktop: XFCE Date: Fri Mar 28 18:41:49 2014 InstallationDate: Installed on 2014-03-27 (0 days ago) InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326) SourcePackage: xfce4-settings UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-mate/+bug/1299138/+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