Just remember that the processing didn't necessarily begin from the time the e-mail was sent - in fact, probably before! I remember stories of people getting their "documents received" e-mails AFTER the approval one!! Just 2 departments not communicating, I have the feeling is the issue. I'm trying to just relax, give the consulate the benefit of the doubt (especially in summer high season), and not even remotely start to worry until the 5 business days are up.