What "natural disinclination" do you think women have, exactly? They don't like math? Women received 47% of math undergrad degrees in 2002 and that number has been stable for 20 years. They don't like computers? The physical sciences use computers pretty heavily, and women received 42% of undergraduates degrees in those fields in 2002, compared to 28% in 1983. They don't like the geeky sci-fi image? 42% of astronomy degrees went to women in 2002, compared to 25% in 1983.
Engineering degrees are still male dominated, women only got 20% of those, but that's still 7 points higher than the 1983 number. The percentage of computer science degrees that went to women decreased from 36% in 1983 to 27% in 2002, to 18% in 2008.
At least we can agree that there's something unique about computer science that it goes against the trend.