How to reproduce:

1. Install ApacheDS, and use the default configuration.

2. Import default partition following ApacheDS basic documentation.

3. Search:

   require 'rubygems'
   gem 'net-ldap', '0.2.2'
   require 'net-ldap'
   
   ldap = Net::LDAP.new
   ldap.port = 10389
   ldap.auth 'uid=admin,ou=system', 'secret'
   
   p ldap.search(:base => 'ou=people,o=sevenSeas',
                 :filter => '(uid=cbuckley)')
   

Version 0.1.1 works, also see this related issue reported in devise ldap authenticatable.