Guild Wars 2

There’s been a bug that’s been going on for quite a bit, and i’d like to inform Arenanet about this topic. I just started playing Guild Wars 2 again and noticed the bug again.
When a human female laughs or a norn male laughs, multiple laughs from one person can be heard.

Here’s an example I saw on a related forum.
http://www.youtube.com/watch?v=GTji_LoDROc

I see other people talking about the same problem, so it can’t be just myself.
Other people are saying it’s some of the other races as well.

Yeh that’s really creepy too.

This turns me on greatly.