Updating an existing post works randomly. Has anyone experienced this?
My problems are similar to this post: http://wordpress.org/support/topic/update-post-does-nothing?replies=2
But changing the title doesn't work. Posting new material works. But preview works randomly just like update.
It's a WordPress MU recently updated from 2.7 to 3.0.1.
Anyone have a clue? Where to start looking?