Page is a not externally linkable
-- Google SEO News and Discussion
---- WMT Showing www Version of Site Not Verified. Was Verified Before
bluntforce - 4:00 am on Dec 8, 2012 (gmt 0)Thread source:: http://www.webmasterworld.com/google/4525994.htm
I just had that happen.
http://www.example.com was fine
http://example.com turned unverified
There is a redirect in place to go to www so no quick way to place the verification file. A day or so later, it fixed itself.
Brought to you by WebmasterWorld: http://www.webmasterworld.com