I can confirm that bug with Hardy Alpha 6 from alternate install. I was unable to use 'Unlock' button with fresh install and it still doesn't work for me with all available updates installed.
When I click 'Unlock' button it hangs for some time and then displays "Could not authenticate" error message. Here's the output from terminal: $ users-admin ** (users-admin:7549): CRITICAL **: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. -- Unlock button throws an error, doesn't authenticate https://bugs.launchpad.net/bugs/187335 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs