I can't disable the Guest session for Ubuntu 12.04.
I tried to add
allow-guest=false but it doesn't work.
Is there another way to disable it?
First you need to hit CTRL+ALT+T to open the terminal. When you've opened the terminal you need to type:
sudo sh -c 'echo "allow-guest=false" >> /etc/lightdm/lightdm.conf'
When you did that restart the computer and that's done ;)
Just follow the steps to disable the Guest account