Sorry I don't know if it's the correct place to voice out questions - correct me if it's not.
I just did what you told me last night (29 Aug 2011). I was correctly redirected to the Google Apps login page, and also the subsequent "XXXXXXXX (my URL) wants to access the following information" (etc.). But then I was stopped at an error with only 1 line of output: "OpenID authentication failed: Nonce already used or out of range". Any clue on this?
Thanks! I love this great extension - simple, easy to use, just great.