The citation was [1]. It is typical for women that attend open source conferences. That really sucks, for everybody involved.
1. http://www.networkworld.com/community/blog/there-sexual-hara...
1. http://www.networkworld.com/community/blog/there-sexual-hara...
But you're using the word "typical". It connotes that such harassment is not only regular, but expected if a woman attends a conference. Nothing you've linked to (and nothing they've linked to from what I've read) supports the position that sexual harassment is activity that a woman should expect to be typical when going to these conferences.
Do they happen more than any of us would like? Most definitely. I agree it's a problem. I disagree that it's a typical problem.