I'm running a simple install of WordPress, with around 11 plug-ins, a customised 3rd party theme and on 5.1.56 of MySQL.
Since upgrading to 3.3., ALL buttons on the new post toolbar have vanished (e.g. bold, italics, img, ol,), as has the option to switch between visual editor and HTML (I prefer HTML). Additionally, absolutely nothing happens when I click on the 'Add media' button.
I've tried clearing the browser cache, and this makes no difference.
I've also tried disabling all plug-ins, but it's made no difference.
I've tried an automatic re-install of wordpress from within the dashboard: the problem remains.
If I revert to 3.2., the editing buttons appear but I still can't load an image from the 'add post' page.
I've yet to try a manual FTP reinstall of wordpress, as I have limited time to admin the site right now.