Wordpress 3.3 has just been allowed out into the wild, so I have just updated my viewsof.co.uk website, having backed it up first using the BackupWordpress plugin. (note: for Joomla I use Akeeba Backup)
Then run an automatic update on the site. So far so good a nice new dashboard and even popups to say whats changed. It also works with the Artisteer theme, so the sites still there.