I heard about "LIBOR fixing" but this was the most detail I found on it so far. (To be fair I've been busy and haven't gone proactively digging for information on it.)
I thought this was a great line "One trader had a few choice words of advice for another: “This is the way you pull off deals like this chicken, don’t talk about it too much … the trick is you must not do this alone … this is between you and me but really don’t tell ANYBODY.” "
I'll dig up more if I can. Do note that the big picture blog would also probably be talking about this, and there was an economist article on hacker news a day or two ago.