Media Buzz: What Was up With Diane Sawyer on ABC?

UPDATE 11/7/12 3PM:  ABC's Diane Sawyer has broken her silence about her on-air performance during Election Night.  She Tweets:

Earlier posting...

A wacky sounding Diana Sawyer, slurring her words and rambling on about nothing, spoke haltingly as she tried to navigate the election returns.   Something very different was going on with her as she clumsily threw to reporters in the field.