I've upgraded the installation of tiny_mce sitewide -- this is the javascript that gives you all the "word processing" stuff in the text boxes for blogs, etc.
Some pages are going to look pretty weird, and I'm in the process of tweaking those, but they're mostly the "behind the scenes" kind of pages anyway.
If you have problems with the new stuff (it still looks like the old one, fonts are off, etc.), try hitting Ctrl-F5 (full refresh) or clearing your cache. If that doesn't work or you have other issues, just lemme know!