WordPress 2.3.1 has been released today and Techie Buzz has been updated using the handy plugin WordPress Automatic Upgrade. There were some bugs I found while updating from WordPress 2.3 to 2.3.1 due to database table name changes which has been fixed. I have released a new version 0.8 which should fix this error.
WPAU is now also available through the official WordPress Extend page so you should see a update note in your Plugins page, please upgrade to the latest version if you are using WordPress 2.3.
Here are list of changes in WordPress 2.3.1
2.3.1 fixes WPAU update, WPAU, WordPress release, WordPress 2.3.1