The short answer is no. Mint is based on Ubuntu and uses the same repos, but was forked from Ubuntu some time ago. The Ubuntu gutsy base is not the same as Mint 4.
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.