I just started getting 404 error when accessing the sitemap of your SEO plugin. I've tried to deactivate and activate - It hasn't helped. I've also unistalled (deleted data) and install it back - it hasn't helped either.
my sitemap: http://www.plaveckyblog.cz/sitemap_index.xml
wordpress version: 3.4.1
And I am using your latest WordPress SEO plugin.
Thank you for your help!