Is CAJO rabid?

Whilst in the work of writing my own remote method invocation framework (not RMI but more like CORBA) if stumpled upon the cajo framework. I've done a little bit of investigation in its features and strengths - but my concerns are tied around the client callback possibilities which my own fw was aiming at. So far it seems like a great library and I might just park my own and perhaps make an efford at understanding cajo for the purpose of implementing concurrent callbacks and such (if not already included in the lib)... Well - its always great NOT to have to reinvent the wheel.. later.