jboner/akka — comment on commit 2b4c8b2508f6a85e03fc106da1f76c5a02ed36d8
File:  line 0
By viktorklang:

Well, of course that's going to be a problem, but that's the same problem no matter what you do. If you capture instance-state in an inner class then you're hosed.

I'm in the middle of the release right now. What users can do is:

class MyPrioMailbox(config: Config) extends UnboundedPriorityMailbox(new MyGenerator)