2.3.1 fixes over twenty bugs. Some of the notable fixes are:
- Tagging support for Windows Live Writer
- Fixes for a login bug that affected those with a Blog Address different than their WordPress Address
- Faster taxonomy database queries, especially tag intersection queries
- Link importer fixes
Unfortunately, some security issues were found in 2.3. Specifically, an XSS problem that can be exploited if your php setup has register_globals enabled. For this reason, upgrading to 2.3.1 is advised.
See a full set of changes between 2.3 and 2.3.1 here on the Trac
Download the new version and upgrade your current copy.
