[Crake]

I really doubt it.

Hormonal differences have a large impact on what traits are most commonly found in the "average" woman (or man, depending on what you're looking for), at the very least in regards to increased chance of risk-taking. I think this is pretty firmly established in scientific literature by now. However, any specific person may be above or below another of the opposite sex in any particular category, since the variables are so numerous. Making hiring decisions on the basis of sex would be rather stupid. "You should hire females because we'd like to have more females around" is just as sexist as "you should hire more males because we'd like to have more males around." How about looking for people to hire, instead of specific sets of genitalia?

I also think that technically inclined females sometimes have more in common with technically inclined males than they do with "normal" women. A personality amenable to huddling away comfortably in front of a computer screen with a ton of coffee for long periods of time is probably the most crucial factor to success. That's one of the great things about programming though, it's much more talent-based than it is concerned with biological sex, how much money your parents spent on your degree, or whatever else that shouldn't really be relevant but in too many career fields, is still heavily emphasized.