Remove postgresql and daemon user entries in Ubuntu Logon Screen

Question

I installed ubuntu 13.10 and installed some software. Now I see two new users in the logon screen called daemon and postgres. How can this happen? Is there a way to remove these entries from logon screen without removing these two user roles (I think these two roles are essential for certain applications).

Answer 1

indeed they're essential for certain services but if you just want to hide them, edit /etc/lightdm/users.conf file (the line that says hidden-users =) and append those users which you don't want to be shown.