Upgrading WordPress is a pain — backing up your database, downloading the latest zip file, deactivating plugins, deleting old files, uploading new files, running update scripts, reactivating plugins, etc. That’s why when non-major releases like 2.3.1 come around, I often look to see if upgrading is actually worthwhile.
All that has changed now. The WordPress Automatic Upgrade Plugin performs all of the steps automatically, allowing you to upgrade your blog in about 5 clicks. This plugin won third prize in the recent WordPress plugin contest. I highly recommend it — it will make your life easier.