To Disable ‘Guest Session’in Ubuntu 11.10

Ubuntu 11.10 provides option to run “Guest Session” which allows any person to login to Ubuntu system with a guest account and no password is required.

To disable “Guest Session “', simply open the lightdm.conf file with the following command:

$ sudo gedit /etc/lightdm/lightdm.conf

And, add the line given below at the end of this file.

allow-guest=false

Restart the system. The guest session option should not appear on the login screen.