The guys at WordPress have just released a new version, 2.3.2 which promises to fix a few important security bugs. They recommend you upgrade immediately, as I have done with this blog.
WordPress 2.3.2 is an urgent security release that fixes a bug that can be used to expose your draft posts. 2.3.2 also suppresses some error messages that can give away information about your database table structure and limits and stops some information leaks in the XML-RPC and APP implementations.
Error thrown
Call to undefined function eregi()