I don't use Acronis, but my understanding is that it isn't compatible with the new block size adopted by Ubuntu/Mint starting with Mint 6.
You might want to check on the Acronis site for the details. There is nothing wrong with your Linux partitions.
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.