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Google changed the naming convention from ALL CAPS to lowercase.
Example: GOOGLE4537....232.html is now google4537...232.html. Google no longer recognizes the upper-case version of the file. I didn't see this mentioned anywhere in the Google blogs or reported by Matt Cutts.
Just a heads up to ensure that your sitemap file is being crawled on a continual basis.
I changed the name of the verification and verified in my logs that Google was hitting it and getting a 200 response, but the sitemaps verification page is permanently stuck on "Verification is pending. We will process this verification as soon as possible. Please check back later for an updated status"
I'll have to bug Google about it, I guess!
My understanding is they search for both upper and lower case versions of the verification file.
That used to be the case, but for some reason it has changed and Google isn't doing that any longer.
There is a definite bug in the system as I cannot delete the offending accounts to recreate them.
I am hoping all returns to normal on the 1st, but this is stressing me out bigtime right now. I may just start the drinking early!
I clicked "Verify Now" and everythings OK!
If you read the help all that happens is certain stats aren't available.
But I'll be keeping this up to date. This could be a very important aid in content ownership verification, etc.
HINT for Google: Your verification routine seems to have problems with round-robin DNS.