TYPO3: page in browser other than in preview or in page edit

I'm experiencing a very strange problem开发者_StackOverflow. The user sees in the browser another content of a subpage than the page editor has defined. I have no idea where TYPO3 gets the wrong content. If I preview the page from the editor it is everything correct. But from the view of a normal visitor of the page I see the wrong things.

Following TypoScript:

config {
// Administrator settings
admPanel    = {$config.adminPanel}

If there are some hidden or user restricted elements, they will be shown as long as you're logged in the backend as well (Maybe check the admin panel preferences, take a look here: http://typo3.org/1215.0.html )