WordPress 2.3.1 upgrade

I installed WordPress 2.3.1.

Quoting the WordPress website

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. Janek Vind found 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.