Perhaps you don't remember that $500 Billion to fund Obamacare was coming out of Medicare.
One area that will be eliminated is the very popular Medicare Advantage programs that help medicare recipients cover the portion of their medical bills that Medicare doesn't cover. Scheduled to be eliminated in October of 2012, this is obviously too close to an election to tick off the portion of the voters that are Medicare eligible. Something had to be done even if it means wasting $8 Billion on a program that they already knows doesn't work but will provide enough cover to delay the full implementation to well after this fall's elections.
Is this just a coincidence? In politics there are no coincidences, everything is carefully planned and executed!