Comment 5 for bug 206924

I don't think that this is really usable as currently implemented in Intrepid. If I'm there to type in my password then why bother with a guest account?? I understand the security concerns of a passwordless account, but if someone is logging into local GDM and I'm not around the presence of a password won't stop them from doing something bad.

I think that there should be an option to allow guest login from GDM and a locked screen as stated here: http://brainstorm.ubuntu.com/idea/15464/