I have released auth_ldap 1.5.0, which is the first release of the new developers beta test cycle. There are a lot of changes in this release, including one change with the AuthLDAPCacheSize directive that is not backwards compatible with old auth_ldap configurations. The good news is that the old version and the new version had reasonable values for this directive, so most people probably do not use it in their configs. For more information, read the full change log.
This is a beta developers release only! If you are using auth_ldap in a mission-critical production environment, you probably should not be using this release. If you want to assist with testing the next version of auth_ldap please feel free to download it and give me feedback.