How to encrypt a diskdrive in (X)Ubuntu Feisty with dm-crypt and LUKS

Today security is one of the key aspects in our daily life - sometimes conscious, sometimes unconscious. Security has many aspects and one of them is computer security or security of your or your business' computer data. In this tutorial I will show how to encrypt a whole disk drive using (X)Ubuntu Feisty, dm-crypt, and LUKS. The article also contains some legal considerations. http://www.howtoforge.com/ubuntu_dm_crypt_luks