Are things going downhill fast at Fox News Channel's media relations department, just as they're trying to generate positive buzz for today's launch of Fox Business Channel?

Michael Murphy, a senior staffer at FNC's D.C. bureau, just walked off the job — following director Leah Yoon and regular spokesman Darin Johnson. For what it's worth, Michael emails us to say that he's "leaving on great terms," and, "I'm leaving to actually relocate home and be with my family at this time for personal reasons." Mainstay publicist Dana Klinghoffer, however, remains — as some of your pitch-filled inboxes can attest to.

Which begs the question: Just what state of mind is Irena Briganti in these days? Which is sort of a silly question, we know.