
Yesterday, I updated bwhw.de (lang=de) to make it now run by the most recent MODx release.
So you’re right, the page didn’t validate due to some changes - thanks to your posting it’s fixed now 
If you would use the real content-type for XHTML, most of the browsers wouldn’t display your site.I don’t know anything about the "real" content-type - btw sounds a bit mysterious. Could you explain, please?