Custom user profile titles interfering with user views block
You could check the url using the arg function and only set the title if the current page is a user/* page. You could try something like the following.

function MYMODULE_user_view($account, $view_mode, $langcode) {
  if (arg(0) == 'user') {
    $wrapper = entity_metadata_wrapper('user', $account);
    $auth_name = $wrapper-&gt;field_account_auth_name-&gt;value();
    if ($auth_name) {
      drupal_set_title('Profile overview for ' . $auth_name;
    } else {
      drupal_set_title('Profile overview for ' . $account-&gt;name);
    }
  }
}