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Check to see if the server had any issues about that time I bet that is the issue and the error messages will go away.
But the code has to tell your browser where to position the view of the big file to show any particular image or icon, and I noticed some wrong positioning today.
You might have a corrupt script wrote for your site maps. I would check there first. I can see where a hacker might want to target script like that and drop links to their own website.
No, I don't think it's that.
Today when I click on the WARNING link, it's saying that I've got the same priority set for all urls. But in most cases, I haven't. And I get the same message on sites that only have one url.
Also today a friend of mine in the same industry, who has a single one page site emailed me all concerned because he has the same message in his GWT account - he only has one site and one url, and it's complaining that all the priorities are set the same, so I think it must be some kind of a bug or something.
(edit: Netmeg is replying with the same answer, sorry)
I'm wondering what to do about the new warnings that have appeared in Google Webmaster Tools about our site maps. All 3 sitemaps now have a warning next to them saying that all the pages have the same priority
All the URLs in your Sitemap have the same priority.
All the URLs in your Sitemap are set to the same priority (not the default priority). Priority indicates the importance of a particular URL relative to other URLs on your site, and doesn't impact your site's performance in search results. If all URLs have the same priority, Google can't tell which are more important.
I have all the priorities auto-set to 1 and we use an automatic sitemap generator (iArchitect) that works great.
What do other people do about this? Am I to have the sitemap generator give a priority of 0.9 to all pages then go and edit the resulting sitemap to make our home page priority of 1?
This is just a new warning appearing for us.
[edited by: Robert_Charlton at 5:29 pm (utc) on June 25, 2008]