Quoted from http://mediamatters.org/items/200802270010?f=h_top:
Media diagnose Hillary "Sybil" Clinton with "mood swings," depression, and "multiple personality disorder"
Summary: In recent days, members of the media asserted that Sen. Hillary Clinton displayed "mood swings," "could be depressed," "[r]esembl[ed] someone with multiple personality disorder," and "has turned into Sybil..."
Click the link above for an exhaustive look at the subject. As always, Media Matters has its facts where its mouth is.