Nested menu, not auto width

Hi!

I have this nested menu, where everything works fine expect from the third hierarchy level.

I have the code and the result here: http://jsfiddle.net/wvsL9/

If you hover the menu: "PRODUKTER" and then "PRIVAT", you see the problem with the width is not "auto".
I am really stuck here, and I have tried a lot of variations.
Can you find out why it doesn't work as I want?

Thanks in advance

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