Maybe you have to check the file /applications/dashboard/views/default.master.php out.
echo Wrap(Anchor(T('Powered by Vanilla'), C('Garden.VanillaUrl')), 'div');
echo Wrap(Anchor(T('P… (View Post)
Delete '-iframe' from the line.
But if you do so, I think you will have some security risk and an u… (View Post)