Strange ldap behavior

["John Nietzsche" <john.nietzsche@gmail.com>]

Dear list members,

i am trying to delete a tree in my ldapserver (i am using ldbm as
database backend). Actually i can perform the delete operation, but i
end up with the following:

$ ldapdelete -x -D 'cn=admin,dc=ufv,dc=br' -W -r dc=ufv,dc=br^M^M
Enter LDAP Password: ^M
ldap_search: Server is unwilling to perform (53)^M
        additional info: critical control unavailable in context^M
ldap_search: Server is unwilling to perform (53)^M
        additional info: critical control unavailable in context^M
ldap_search: Server is unwilling to perform (53)^M
        additional info: critical control unavailable in context^M
ldap_search: Server is unwilling to perform (53)^M
        additional info: critical control unavailable in context^M
ldap_search: Server is unwilling to perform (53)^M
        additional info: critical control unavailable in context^M
ldap_search: Server is unwilling to perform (53)^M
        additional info: critical control unavailable in context^M
ldap_search: Server is unwilling to perform (53)^M
        additional info: critical control unavailable in context^M
ldap_search: Server is unwilling to perform (53)^M
        additional info: critical control unavailable in context^M
ldap_search: Server is unwilling to perform (53)^M
        additional info: critical control unavailable in context^M
ldap_search: Server is unwilling to perform (53)^M
        additional info: critical control unavailable in context^M
$