Sgt_Kickaxe - 11:15 am on Dec 9, 2012 (gmt 0)

There have been several issues with GWT recently involving verification. A glitch temporarily gave domain access back to accounts that shouldn't have had it and the fix resulted in the sites remaining in GWT accounts but appearing as not verified. I think they are being extra cautious right now, it's better that you re-verify than to find out someone else is peeking.