ruby-growlが動かず

jugyoさんのgを試してみたんですが
Growlで開発の効率をUP!

>> require 'g'
=> true
>> g "hello"
Errno::ECONNREFUSED: Connection refused - send(2)
        from /opt/local/lib/ruby/gems/1.8/gems/ruby-growl-1.0.1/lib/ruby-growl.rb:187:in `send'
        from /opt/local/lib/ruby/gems/1.8/gems/ruby-growl-1.0.1/lib/ruby-growl.rb:187:in `send'
        from /opt/local/lib/ruby/gems/1.8/gems/ruby-growl-1.0.1/lib/ruby-growl.rb:170:in `notify'
        from /opt/local/lib/ruby/gems/1.8/gems/g-1.1.0/lib/g.rb:15:in `g'
        from /opt/local/lib/ruby/gems/1.8/gems/g-1.1.0/lib/g.rb:15:in `each'
        from /opt/local/lib/ruby/gems/1.8/gems/g-1.1.0/lib/g.rb:15:in `g'
        from (irb):2

あれ・・・エラーです

調べてみました。

• 'How do I get growl output using ruby-growl in irb?'
• Getting ruby-growl to work

growlを再起動とかしろとのことです。

やってみました。

?> require 'rubygems'
=> false
>> require 'ruby-growl'
=> false
>>  
?> g = Growl.new("localhost", "ruby-growl", ["ruby-growl Notification"], ["ruby-growl Notification"], nil)
=> #<Growl:0x1089c50 @default_notifies=["ruby-growl Notification"], @all_notifies=["ruby-growl Notification"], @socket=#<UDPSocket:0x1089c28>, app_name"ruby-growl", passwordnil
>> g.notify("ruby-growl Notification", "It Came From Ruby-Growl", "Greetings!", 1, true)
=> #<UDPSocket:0x1089c28>

んー　でてきません。
SkypeとかEvernoteとかはでてるんだけどなー