Hmm, so let's see. If this kind of stuff is going on with gender relations, does it exist with race too? Orientation?
For the tech-world, I guess a black lesbian would be a triple-concern? I would say that is a problem. Not sure how to fix it, but that's a problem. I personally don't have to change my behavior or speech when a lady is in the room. But then again, I'm probably unique in that... I never, ever use profanity and never make jokes that wouldn't be safe on the Disney channel. I don't know anyone who can claim that besides me.
But, I will say compared to my time at at&t... the men there seemed to be less frat-housey than the SV-startup-culture. The men at at&t seemed to be more "gentlemanly", more socially acceptable. SV-startup-culture I think allows the frat-house/bro-grammer attitude to grow thus making it more difficult to the men who are use to that to clean up when a lady is around. At least, that's what I've seen.