Nope. But we have our own constructs for a lot of the semantics Erlang provides written from the ground up in C/C++. Sorry, can't talk about it more except in broad strokes :)
Apache Traffic Server?
Nope, this is not public. Traffic server ( and the stuff it lead to) is built by a peer group under the same VP I report to.
I see. I asked because I recently listened to FLOSS Weekly's "Apache Traffic Server" episode featuring some Yahoos who were involved with it from its beginnings, and which is apparently used heavily within the Yahoo infrastructure.