In the Hungarian version of admin bounce mail, I get " Teendő: Feliratkozás disabled." message, however, "disabled" is clearly not hungarian...
I'm not a python wizard, but for me it seems that the "disabled" string is static/not translated at __sendAdminBounceNotice in Bouncer.py, so it might not work in other languages as well. [If I'm not correct then I wonder why it happens in the hungarian version then...]
Also subject is not translated, I couldn't check whether is should or not. [Subject: Bounce action notification]
Also if I can be of any help in the hungarian translation, let me know.