As of last night I can still use my authenicator with all my accounts at the same time. I HAVE NOT CONVERTED MY ACCOUNTS TO BATTLENET. Reading this thread I am not going to transfer over until they fix this problem. I think it is a minor bug that they will eventually fix.

I really like using the authenticator. I don't know how many times I have accidently /said my password on slaves. I don't really care since having a password isn't any good without the authenticator.