If user requests page that is unpublished, gets permission denied and page dies with too many redirections When users without permission to administer nodes want to see content that is unpublished, they get a redirect loop.
I would rather show them a "this content is not anymore available."

Why is the redirection loop happening?
The problem was, i had settings for user to redirect to user/login after permission check, so teh system somehow ended in loop. I set special node page for such occassions, and now everything went normal again. Gisle thanks for comment (which easily could be answer to question)