Hi, I submitted my sitemap to google webmaster tools a few months ago. Everything was going well my pages were gettting indexed and all of sudden in the last week when i log in to my Google webmaster tools account i get a red cross next to my sitemap and it: 'Unsupported file format Your Sitemap does not appear to be in a supported format. Please ensure it meets our Sitemap guidelines and resubmit.' The first time it happend i just left and after a day or so the sitemap started working again but today i have logged on and i am getting the same red cross and it says unsupported file format. I haven't done anything that would cause any change to my sitemap. I suppose i could resubmit my sitemap but then i have heard that if you do this a few times you risk getting your site sandboxed and thats the last thing i need right now! So peeps any suggestions on how i can resolve this issue? Thanks in advanced!