What cd? Do you mean a Mint 4 iso live cd?
How did you burn the cd? It should have been burned s-l-o-w, 4X, and as an iso, not a data cd. You should have checked the md5 sum with the one on the web site download page to make sure it burned correctly.
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.