The entry on www.gentoo.org "Gentoo Weekly Newsletter -- 18 September 2006" points to http://www.gentoo.org/news/en/gwn/20060911-newsletter.xml instead to http://www.gentoo.org/news/en/gwn/20060918-newsletter.xml
Fixed a 30 minutes ago. Give a few more minutes before it reaches our web servers. Thanks for reporting.