Enable Root Login in Kubuntu 9.10

Kubuntu Linux by default doesn't let you to login as root on your graphical login terminal.
Kubuntu has its own security mechanism that does not allow root login so that you don't mess up your system, because when you are root, you will have all the privileges to destroy your Linux box.
Although in Ubuntu 9.10 root login is enabled, but not in Kubuntu (9.10). So to enable it, first you need to be root.