Running through the ULS log and I see this - my SSA doesn't have anything regarding that account
02/14/2015 08:33:22.77 w3wp.exe (0x10B4) 0x0BB4 SharePoint Foundation Claims Authentication g220 Unexpected No windows identity for contoso\searchcontent. e692e99c-9ec5-1019-f58b-65ef47649ede
02/14/2015 08:33:22.77 w3wp.exe (0x10B4) 0x0BB4 SharePoint Foundation Claims Authentication g220 Unexpected No windows identity for contoso\searchcontent. e692e99c-9ec5-1019-f58b-65ef47649ede