With the release of WordPress 2.7, one of the features was the built in auto update functionality. Since WordPress 2.7.1 was just released, I put it to the test and it was extremely easy.
1 – Backup your blog database. The WordPress Database Backup plugin is the best way to do this. http://wordpress.org/extend/plugins/wp-db-backup/
2. Login to the WordPress admin and click the “Please update now.” link.
3. Click the “Upgrade Automatically” button.
WordPress will then do it’s thing and you’ll be done in seconds!
Depending on your install, you may be asked for the FTP password or could possibly even be told you can’t use the auto update. Different hosts allow different scripts like this to run.
Since updating is so quick and painless, you may want to take the time to check your blog plugins for updates or write another post.