I recently tried to update my WP installation from 3.3 to 3.3.1. I updated all of my plugins first, all seemed to be fine. Then I updated WP and while I could see all of my posts and pages in the database and from wp-admin, the links to my posts were destroyed. If I clicked on pages, the links worked fine. But when I clicked on post links, even though in wp-admin I could see my post and its content, I could not preview the post page nor access the post from its URL. I hope I am being clear.
I had to revert the site back to 3.3 and all is working fine again. Any help would be appreciated.