On both my MBA and my Mini, both up to date on fixes, both on 10.7.4, I am getting "phantom" user profiles which mirror my main profile. I have no idea what the password is because my password won't work, and neither will a blank password. There is no /user/USERNAME directory for this profile. This "profile" does not show in the users & groups. It just shows on the login screen. What is up with this and how do I remove this?