I started using Linux in 1994, installing Slackware from floppies on a home-built machine some friends of mine from the dorms helped me pick out parts with. I screwed the motherboard into a case myself and tried not to bend pins when I put the cpu in for the first time. I was terrified I was going to break something, but my friends wouldn't do it for me.
More recently, I was the co-chair of Open Source Bridge (a conference for open source developers and "citizens" in Portland, OR), and am very involved in PostgreSQL.
Anyway, I have written a lot about the topic of women and open source -- primarily from angle that mentorship and social circles really impact women's participation.
I think your comment could be an example of this effect. :)
When more of the men who lead and code the core open source projects start to know and are friends with the women who participate, I think we will see a huge shift in perception and reality around recruitment and participation of women.
My approach is to just do stuff - start user groups, write code, tell people what I think - rather than argue about whether there are or are not enough women.
When people ask me how to get more women involved in their software projects, I tell them to look around, start talking to the women around them and ask the women they find who show interest to participate directly. This, oddly enough, tends to work. I live in Portland, OR -- which some people think is some kind of techno-communal utopia. But we're just like everyone else.. We just have a bit more energy around bringing social activity and tech together right now.
I'm not very interested in discussing the barriers to participation at this point. They are there, *shrug*.
I think it is far more productive to just take action, measure the results and adjust accordingly.