weblogic.security.service.SecurityServiceRuntimeException: [Security:090371]Problem instantiating Authentication Provider java.lang.IllegalStateExcept

Just an FYI. BEA has confirmed this 1s a bug (bug number pending). It occurs if you create a domain that is based on the WL Platform or WL Portal configuration templates. If you create a domain based on any of the other templates, NodeManager works just fine.