If you have SSH access to your WordPress website, Mark Jaquith offers his SSH commands for upgrading WordPress to make the job faster and easier.
For those with SSH access to their server, this could be a timesaver. You just CD to your current WP directory and paste this in. A quick visit to /wp-admin/ to upgrade your database, and you’re in business.
WARNING: If this breaks things, I don’t want to hear it. If you don’t know enough to look through and see what you’re pasting, you deserve for bad things to happen to you.