The information about the user is shown by default "Logged in as:" <user>
In case of "authtype" = "authad" I would prefer not to show it, since it is not possible to log in as another user.
I have commented out line 923 \inc\template.php:
// print $lang['loggedinas'].': '.userlink();
=> Now it is not shown any more :)
However I would prefer to set this in the configuration manager.
Version: Release 2014-05-05a "Ponder Stibbons"