Working fine for me. If I middle click your username I get sent to your profile, if I click an avatar I get sent to the profile. If I left click a name a dropdown appears with more info.

Sure your not have Javascript problems? I did a while back, and it still recurs sometimes. When I ask for confirmation on PM's Firefox closes on me. Sometimes when I type an apostrophe or forward slash it opens the search bar. When I close Firefox and reload it everything is fine. If I disabled Javascript I never had any of these problems.