This seems like a weirdly specific problem.
Since last night, the profile, your blogs and follow button on O-Deck have been totally broken for me. Profile doesn't load at all and stays greyed out, so I can't see notification alerts, and I can't click on any of the buttons - and weirdly, the compose button has completely vanished (I'm writing this from io9's front page!) too. The problem literally only effects Observation Deck for me, all those buttons are functional on io9, Kotaku, even other 'side-blogs' like Talk Amongst Yourselves, and oddly enough, when I click on a post on O-Deck, they work. It's just specifically the main O-Deck page that seems to be busted.
Using Chrome 31.0.1650.63 m, the latest version, if that helps.