Can permissions be set on content types? I don't know why this is happening but none of my contents are displayed when logged out. All the contents in views, blocks, everything disappears upon logout. As far as I can remember I haven't touched any permissions. In fact I created this project only a few days ago. 

I have two jCarousel slideshows and a few views connected with nodequeues on my site among other things. All of them disappears upon logout. This is driving me nuts. I have already checked all permissions on views, blocks, and everything I could find.

Please suggest why this could be happening..

EDIT: As an experiment I searched for a content through the search bar and the page returned said access denied.

EDIT 2: I had formerly posted a question [here][1] with a similar problem and I couldn't find a solution to it. This is the same project and the problem it seems has grown worse.  


  [1]: http://drupal.stackexchange.com/questions/30178/blocks-missing-from-homepage-after-logout