As mentioned elsewhere on the forums, SABnzbd sometimes leaves the working directory with and without files on the server. I have experienced this as well with my QNAP 419 (runs Linux). I was hoping that someone with some scripting knowledge could create and share a script which could be used as a Post-Processing script that deleted/moved the working directory. I think that a script like this could be really helpful.
Thanks for looking into this,
PS. When I was running SABnzdb 7.20 I did not have any problems with left over directories.