I would like to change the url to
I have made a parent category "edities" and a child category "oktober-2010",
and a parent category "rubrieken" and a child category "colofon".
If I only select "oktober 2010" the post slug is
But each time I select both categories (colofon and oktober 2010) the post slug changes to http://cpost.nl/online-magazine-curacao/rubrieken/colofon/colofon/
Is there a way, maybe a plugin which makes it possible to change not only the post slug, but also the category slug in url/permalink?