[Plugin: WordPress SEO by Yoast] My news Sitemap Is not showing all post/news !

Hello,

we have been posting news on our site since 22nd august. but the news sitemap is not showing all the URLs.

Please check posts the sitemaps:
http://inewswire.info/post-sitemap.xml

Please check news sitemap:
http://inewswire.info/news-sitemap.xml

I am not sure where i am going wrong.

Regards,
Kanak

http://wordpress.org/extend/plugins/wordpress-seo/