Visit this link:
http://wordpress.org/development/2010/06/thelonious/
WordPress 3.0, Thelonious, is here. Get some! Lots of new features, enhancements, and bug fixes.
Update: The plugin HeadSpace2 was wreaking havoc on my Edit Post pages and it’s WordPress Plugin Page confirms that it’s “broken”. After I disabled it everything was all good. And All in One SEO Pack can get the job done just as well.
