Did I mention upgrading WP is now completely painless:
$ svn propset svn:externals "wp http://svn.automattic.com/wordpress/tags/2.3.3" . property 'svn:externals' set on '.' $ svn up Fetching external item into 'wp' U wp/wp-includes/gettext.php U wp/wp-includes/version.php U wp/wp-includes/pluggable.php U wp/xmlrpc.php U wp/wp-admin/install-helper.php Updated external to revision 6736. Fetching external item into 'wp-plugins/openid' Updated external to revision 30920. Fetching external item into 'wp-plugins/akismet' U wp-plugins/akismet/akismet.php Updated external to revision 30920. Updated to revision 292. $ svn -m "Upgrade to WP 2.3.3" commit . Sending . Transmitting file data .. Committed revision 293.