Authentication Mode UI Clarification

We ran into an issue with the "Drupal's DB first, then LDAP directory" authentication mode. If a username exists in the Drupal database, but the password is entered incorrectly, the module will try to authenticate against LDAP. If the user does not exist in LDAP a blank white page appears. This is an issue in and of itself, but the original problem was solved by checking LDAP first, followed by Drupal.

The "LDAP directory only" language used for the second authentication mode does not convey an accurate meaning. To me it does not indicate that it will ever look at the Drupal DB for anything other than the first user. However, according to this ancient issue, it does do precisely that: http://drupal.org/node/47339 Selecting this setting did result in what we needed in the end to avoid the white page issue.

In short, the language needs to be clarified.