Interesting issue here that I don't think most people will run into.
On the careers site, if I've sent out 3 applications I would typically be able to see that message list ("for job seekers" view). However, I've posted a job to the site just last night and the 5 applicants I've gotten have shown up-- but my old "job seeker" view has vanished.
You probably didn't expect employers to also be job seekers, but that's the situation I'm in. Both "views" take me to http://careers.stackoverflow.com/employer/messages .
The impact is I can't really use the site to do a job search while looking to hire someone.