--- lib/Nagios/Plugin/LDAP.pm 2009-01-14 02:29:40.000000000 +0000
+++ lib/Nagios/Plugin/LDAP.pm 2009-01-15 02:17:56.000000000 +0000
@@ -257,6 +257,7 @@
   return 1 unless $warning or $critical;
 
   my $src_ldap = $self->_ldap_connect($master) or return;
+  $self->_ldap_bind($src_ldap);
 
   my $src_entry =
     $self->_ldap_do_search($src_ldap, '(&(objectClass=*)(contextCSN=*))', 'contextCSN')