At the office, the Stack Exchange login page will not let go of the Google Apps account for login. It wants to create a new account based on that when I want to log in.
I removed Stack Exchange cookies and the cookie to stackauth.com. Then I go to login > google. It brings up the office Google information with confirm your new account. I didn't tell it "sign up", I told it "log in".
Chrome version: 42.0.2311.135