After klick on headline in blog reload to blog

This is very strange. Nearly all 3 days I have to save the permalink-structure again without any change because the link from the blog-steam to the article itself break again and again.
http://pronatur24.eu

Have you ever heard of something like that? This is very stange.
I’ve saved permalinks now so it’s working fine. I think in 2 days the link don’t work again…

I have to update to the new version of atahualpa. Could this maybe fix this problem?