I have had strange problem with WordPress since yesterday: I can't add new posts or edit extisting posts. Otherwise WordPress works fine, so the problem is clearly connected with /wp-admin/post.php.
When I try to add or edit a post my browser just loads about one minute and then gives a page ending on 'Write Post' heading. Screenshot to get a better picture (pun intended).
Any ideas what may cause this problem and how to fix it? Thanks!
EDIT: Messed up with link. :)