Opinionista has written a savagely funny post about the poor treatment she received when one of her firm's partners mistook her for a secretary. (The name of the post is "Perception" dated November 10.)
The Women's Bar Association in my state, of which I am not a member, constantly makes a big deal in the Bar publication and elsewhere regarding the issue of women attorneys being mistaken for secretaries. I don't worry that much about it. When I call someone new I usually identify myself as, "Hi, My name is Happy Feminist, and I'm an attorney working with so-and-so on the such-and-such case . . . " Women attorneys are generally treated with respect once it becomes clear that they are in fact attorneys.
What's more disturbing is the poor treatment received by secretaries and other women in service positions. Just because someone is there to support another person's work does not mean that she should be treated like a slave, a moron, or a piece of furniture. When I did temp secretarial work during my college years, it was amazing how many people seemed to think it was okay to either hit on me or treat me like crap. I suspect waitresses, flight attendants, nurses, and other women support workers go through the same thing. (Men in similar positions are probably treated that way as well, although I suspect that a grumpy bully is more likely to pick on a woman than a man.)