This is the same as this answered question, except I've tried the steps outlined there and it didn't work.
I first logged in using my Google log-in and then tried association, but I'm still referred to as New User and there doesn't seem to be any association with StackOverflow. So I resigned in with my OpenID after logging out and clearing cookies and tried associating that way, and it tells me the account is already associated.
If the association was working properly, logging in with either Google or OpenID should go to the same account as they do when logging into SO, but they do not. Something is screwy.
I see "No associated accounts" when I click "New User" but I can't associate my account (in either log-in - which, if associated properly, should surely both lead to the same careers account anyway as they would link to the same account in SO, Meta, SF or SU).