I have the same issue, also can't change Users/Groups, unlock button grayed out.
Tried to run 'sudo gksu time-admin' and unlock button still grayed out. Received the following: (time-admin:19248): Gtk-WARNING **: Unsupported tag for GtkWidget: atkproperty (time-admin:19248): Gtk-WARNING **: Unsupported tag for GtkWidget: atkproperty (time-admin:19248): Gtk-WARNING **: Unknown property: GtkCalendar.display-options ** (time-admin:19248): CRITICAL **: Unable to lookup session information for process '19248' -- No way to change time/date https://bugs.launchpad.net/bugs/234177 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs