As I wrote awhile back, I was lucky enough to be invited to write the foreward to the  of writing the 40th Anniversary edition of The Peter Principle: Why Things Always Go Wrong.  When it is officially published in a couple weeks, I will do a longer post.  But I did have fun with an interview I did at Women for Hire.  My main point, I suppose, is that although both women and men are at risk of being promoted to their level of incompetence, that since organizations generally hold women to higher standards than men (and look the other way when a man is incompetent), that there are probably more incompetent men than women in the workplace.  It is jsut a hypothesis, but backed by studies on negative stereotypes of women and actions against them — see Through the Labyrinth.