A serious security patch was the main reason for WordPress 2.3.3 being released 3 hours ago. There was a bug in the XML-RPC implementation which allows a registered user to edit posts of other users on a blog. This doesn’t affect this since I’m the only writer, but the offer is open to anyone who wants to be a guest blogger.
This was a very easy upgrade and I recommend all WordPress users to do this. Its important to keep your blog as secure and bug-free as possible.