If you’re a WordPress user, you are probably already aware of this because when you refresh your dashboard a nice little yellow message comes up at the top telling you to upgrade. So yes, the upgrade for WordPress 3.1 is finally available, so go upgrade your system.

WordPress 3.1.1 features some additional security fixes to plug some holes in 3.1. Here are the bullet points for the upgrade straight from WordPress’s mouth:

* Some security hardening to media uploads

* Performance improvements
* Fixes for IIS6 support
* Fixes for taxonomy and PATHINFO (/index.php/) permalinks
* Fixes for various query and taxonomy edge cases that caused some plugin compatibility issues

They continue with more details:

Version 3.1.1 also addresses three security issues discovered by WordPress core developers Jon Cave and Peter Westwood, of our security team. The first hardens CSRF prevention in the media uploader. The second avoids a PHP crash in certain environments when handling devilishly devised links in comments, and the third addresses an XSS flaw.