[MeTaL_oRgY]

hmmm... open online.php and search:

      // Let's show the admin the location but put something false up for everyone else..
      if ($bbuserinfo[usergroupid] == 6) {
         $userinfo[location] = htmlspecialchars(stripslashes(replacesession($userinfo[location])));
        $userinfo[where] = "<b>Unknown Location:</b> <a href=\"$userinfo[location]\">$userinfo[location]</a>";
      } else {
        // We were unable to parse the location
        $userinfo[where] = "$bbtitle <a href='index.php?s=$session[sessionhash]'>Main Index</a>";
      }
  }

I'm not the better person for this, but I'm sure that must be modified. Have you tried removing this line:

        $userinfo[where] = "<b>Unknown Location:</b> <a href=\"$userinfo[location]\">$userinfo[location]</a>";