![Debian GNU/Linux 6.0 framebuffer console. Debian GNU/Linux 6.0 framebuffer console.](https://www.securitronlinux.com/wp-content/uploads/2011/09/console-300x187.png)
There is a very useful posting here: http://rationallyparanoid.com/articles/ubuntu-10-lts-security.html That gives many useful tips on how to secure your Ubuntu distribution during installation and how to properly configure it afterwards. There are tips on setting the title-bar buttons back to the right of the window and how to properly re-enable the root user.