xmlsitemap sent two times per cron

Same problem to me too.
I have a site with two languages (but english is not the default one) and "Add all the links to the default language sitemap" checked. Is this a possible cause?
The duplicated log row are exactly identical (time and text).
Ask me if you need some other infos!
Regards,
Saxx

This happens because of this code in xmlsitemap_engines_cron():

  // Get a list of enabled languages.
  $languages = language_list('enabled');
  $languages = $languages[1];

  foreach ($languages as $language) {
    if (!isset($engine)) {
      foreach ($engines as $id => $info) {
        if (variable_get("xmlsitemap_engines_{$id}_submit", FALSE)) {
          xmlsitemap_engines_submit_sitemap($info[0], "xmlsitemap_engines_{$id}_url", $info[1], $language);
        }
      }
    }
    elseif (isset($engines[$engine])) {
      xmlsitemap_engines_submit_sitemap($engines[$engine][0], "xmlsitemap_engines_{$engine}_url", $engines[$engine][1], $language);
    }
  }

We automatically submit sitemaps for all enabled languages. One of the issue reporters already established he has two enabled languages. I'd be willing to bet the original issue reporter has two languages as well. With the change to xmlsitemap_engines_submit_sitemap() in #537140: Error occurred submitting sitemap to Google: 400. you would see the different language sitemaps in the watchdog messages.

What we should do is skip looping through all languages if variable_get('xmlsitemap_all_links_to_default_language', 0) is TRUE and only submit the default language sitemap.

Please give the attached patch a try. If you have the "Add all the links to the default language sitemap" option enabled, it should only submit once to each search engine.

Hi!

I applied this patch on my site without errors, and seems to be working very well. I run the cron many times, and the problem disappeard. On my site the "Add all the links to the default language sitemap" option enabled, and my sitemap not submitted any of the search engines. The content didn't changed on my site during the test, and I use the xmlsitemap 6.x-1.1 version.

Subsr. I`m near site release. I will test patch as soon as possible.

Committed to CVS.
http://drupal.org/cvs?commit=260456

I have the same problem with one language enabled only, i have tested to enable "Add all the links to the default language sitemap" but it seems not working

@edjay Are you using the latest 6.x-1.x-dev? Because this fix isn't yet included in the official release.

Ok sorry and thx Dave, i am using the recommended version.
Do you think i can switch to the dev without meeting many problems ?

@edjay: No, there shouldn't be any problems using the dev versions like there were before. When we make a 6.x-1.2 release though, you'll want to upgrade to that again.

Oki, very nice Dave and thx for this module