I noticed some weird things going on in the admin. Mainly the toolbar when editing a post would disappear if you clicked the HTML view and no matter what it wouldn't show up.
I found out the problem was with the CDN Tools plugin.
The only fix I found was to TURN OFF "Use Google AJAX CDN". My guess is CDN Tools is loading a different version than wordpress wants.
I would recommend a quick patch so everyone doesn't have to troubleshoot this problem.