I have easyblog, the xmap plugin and sh404sef installed on my site. It all works fine, except for the sitemap. The links in the sitemap don't point to the blog, but duplicate the blog content under the sitemap.
For example:
This bog post (
http://www.humanvariomeproject.org/blog/formalising-our-relationship-with-the-world-health-organisation.html) appears in the sitemap as
http://www.humanvariomeproject.org/sitemap/formalising-our-relationship-with-the-world-health-organisation.html.
I think this is an issue with the xmap plugin, rather than sh404sef.