@hypolite Thanks for having a look at that!

I thought this privacy setting ('hide profile details from unknown viewers') meant to just restrict the view on to my profile page. Especially as it says there: "Anonymous visitors of your profile will see only your profile picture, your name and your nickname. Your public comments will be visible nevertheless. "

And it seems as if the above mentioned post shows up in the notifications of my contacts but they can't see it, when they click on it. Quite often people who follow me, tell me the get an "access denied".

Anyway, i will change the privacy setting and see what happens in the future=)