As with any software, it is important to keep it up to date to avoid security issues.

Wordpress recently released. 3.0.4 fixing a critical vulnerably.

Remember to back up your site and your database prior to upgrading.Even though your web host probably has backups of its server, It can take a while to get them. It is much better to have your own local and web based backup that you can restore from. Do not forget to back up your database. If you have questions, on how to do this, contact your site host, your website developer, or drop me a note here.

Wishing you all a very Happy and Prosperous New Year!