188.8.131.52 has a few minor and some major updates. In fact, most seem to pertain to IE9 Beta 1. Changelog is here: http://tinymce.moxiecode.com/changelog.php My internal tests show some sort of performance gain of approximately 7.45% (it's not much, but at least it's something) - though this is not important. Whilst on the subject - will it be safe for us to update TinyMCE on our forums, or should we wait for XenForo to release a build with an updated TinyMCE include? I also assume SWFUpload has been customised?