I'm stumpted. . . . .
I've got one blog out of many for whom the ability to create permalinks seems to have gone away. I cannot figure out what is causing this problem.
Here is the situation: under normal circumstances, you write the title of the post and there is an AJAX action that happens in the edit_slug_box div which throws the permalink in with a button to edit it. I'm not sure where the value of this permalink is being held for the purpose of publishing the post. Regardless, none of this is happening when I write a post on this particular blog.
All plugins are turned off for this blog. Of course, there are /mu-plugins/, but no other blog is being so affected and I can't figure out why this is happening in just one instance. There seem to be no errors in the JavaScript.
Also, when I look at the AJAX responses in FireBug, I notice that in both cases - on blogs that work and on the one that doesn't - I get three replies from admin-ajax.php. In the case of those that work, I get an autosave response, a response containing the new buttons for the permalink and one that seems to update the bb2_screener cookie with a new hash. In the case of the one that doesn't work, I get two autosave responses and the bb2_screener response, but no permalink stuff.
Anybody have any idea what might be wrong? I don't see how just one blog can be borked in this way, but here I am.
Much obliged for any assistance you guys can give me.