hi, don’t have Shortcodes installed, but have CKEidtor and supercache.
same here. this message starts to appear after upgraded to 3.6.
This message appears when actively editing a page. It disappears after finishing editing the page and leave the page alone for a while.
My plugin list is rather short. But the following two might be the reason:
– CKEditor
– WP Super Cache
thanks, Ipstenu. was reading something about sharepoint. one always gets confused with the top level web app and the subsites. 🙂