http://blogs.technet.com/b/sushrao/archive/2011/12/02/sharepoint-display-name-does-not-update-when-nt-authority-authenticated-users-are-added-to-site-s-visitors-group.aspxTo give read access on a SharePoint site to all the users within a domain we generally add NT Authority\Authenticated Users to Site’s Visitor group . However, we have identified that we will run into situations where some attributes of a user is updateden-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)