From Inside Politics:

CNN's Robert Novak reported an item about Democratic Party Chairman Howard Dean and said that when Governor Dean spoke to students at Cornell University last week, Dean remarked that in 30 years Social Security would lose 80 percent of its benefits. Bob Novak misquoted Governor Dean, it turns out. Bob tells us that he intended to report that Governor Dean said that in 30 years, if nothing changed, Social Security would be reduced to 80 percent of its current benefits. We apologize for the mistake and we're happy to set the record straight.

That is an out and out lie, because Novak did it on Feb 26th as reported by Media Matters on The Capitol Gang.