Ubuntu and Mint are two different distros. Even though Mint uses Ubuntu repositories and is based on Ubuntu, it is not Ubuntu. It was forked from Ubuntu.
The only way to get a true Mint install is to install Mint. Mint 4 is the current stable release. Mint 5 is in early beta, but isn't considered stable yet.
Insanity: Doing the same thing over and over and each time expecting a different result.
Democracy is 2 wolves and a lamb voting on the menu. Liberty is an armed lamb protesting the electoral outcome. A Republic negates the need for an armed protest.