At least the German localized version has a somewhat messed up quickedit section after upgrading to 3.4. Here is a screenshot.
Site url: http://www.av-linux.de/
I have made only an upgrade of wordpress. All other stuff like plugins, theme etc. had caused no issues in version 3.3.2.
Theme: Twenty Ten (up to date)
Plugins (not much over here): Quickcache, Bad Behavior, Fast Secure Form, WordPress SEO, Bookmarklet and a costumized Version of WP Pineapple. All plugins are fine in both versions. I don't think, that they causing the issue.