I tried searching the mailing-list archives but I got an error from the search-server, and there's nothing on the wiki that I can see, so I'll ask:
Does the PyDev debugger work with Jython (say 2.2rc2)?
I was not able to use the PyDev debugger (1.3.6 anyways) on current versions of Jython (2.2rc2) (it hangs).
I will post a similar request on the Jython mailing-list.