This upgrade stinks. I wish the WP coders would act like professionals.
I notice that on "Edit Page", the left sidebar dropdown arrows (for things like Posts, Links, Media, Pages, etc don't work. Anyone have any ideas there? I also notice that javascript from various plugins works fine in other areas but not on edit-pages.php.
Hope that helps, and I hope someone fesses up what the darn problem is.
Drupal is looking prettier all the time. They actually test their code as they develop it.