Almost a month since initial release we have finally received a long expected bug fix update. But looks like WordPress 2.3.1 addressing more then just a few bugs but also a security issue. While that security problem only impacts people whose host still have register_globals enabled (shouldn’t be too many) it is still worth updating.
There is much already written on the topic and but one of the best ways to learn is to hit one of the sources. Peter provides all the details on what is been addressed in this release and reading through his blog it appears that at least some of the enhancements slated for 2.4 release made it in here as well.