There are three blogs ( all WP 2.5.1 ) which I have been managing for a while. Two of them, located on the same server, after installing Google XML Sitemaps 3.1 read the same message: "Your sitemap is being refreshed at the moment. Depending on your blog size this might take some time!" and nothing works so I am forced to rebuild the sitemap manually after each posting. That message won't go away.
The third blog works fine with 3.1.
What's wrong? Could be apache settings?
Thanks in advance.