After upgrading to 2.8, WP can't seem to write to the domain root. I have it set up according to the instructions under "Giving WordPress its own directory." Everything works fine on a fresh 2.7.1 install (via GoDaddy's automatic WP install). Then I upgrade to 2.8 from the admin interface, and the Permalinks page gives me the "If your .htaccess were writable..." error, and the GoogleXMLSiteMaps plugin can't create a sitemap, so it seems WP just can't write to the root at all after the 2.8 upgrade. Any ideas why this might be?