gravatar has never worked for me. it.simply.doesnt.work!
I have filled in my details and such, got the e-mail, responded to the e-mail, and then gravatar pretends it doesn't know me, even though it has sent me an e-mail!
The username (which gravatar said was fine) I set isn't recognized as "in use".
Very frustrating! Ill just wait for the new forum, and hope uploading an avatar will work then.