fluetntdを実行すると、unexpected error error="Address already in use - bind(2)"が出て動かない

こちら http://fluentd.org/doc/install.html#id1 にある通りに、fluentdを実行しても下記のエラーが出て実行できません。
なにか、ご存知の方が居らっしゃればご教授頂けると幸いです。

2012-01-25 01:37:42 +0900: fluent/supervisor.rb:143:supervise: starting fluentd-0.10.9
2012-01-25 01:37:42 +0900: fluent/supervisor.rb:225:read_config: reading config file path="/usr/local/fluentd/fluent.conf"
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered buffer plugin 'file'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered buffer plugin 'memory'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered input plugin 'exec'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered input plugin 'forward'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered input plugin 'http'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered input plugin 'tcp'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered input plugin 'unix'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered input plugin 'syslog'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered input plugin 'tail'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered output plugin 'copy'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered output plugin 'exec'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered output plugin 'exec_filter'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered output plugin 'file'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered output plugin 'forward'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered output plugin 'null'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered output plugin 'roundrobin'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered output plugin 'stdout'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered output plugin 'tcp'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered output plugin 'unix'
2012-01-25 01:37:42 +0900: fluent/plugin.rb:85:register_impl: registered output plugin 'test'
2012-01-25 01:37:42 +0900: fluent/engine.rb:63:block in configure: adding source type="forward"
2012-01-25 01:37:42 +0900: fluent/engine.rb:63:block in configure: adding source type="http"
2012-01-25 01:37:42 +0900: fluent/engine.rb:79:block in configure: adding match pattern="debug.**" type="stdout"
2012-01-25 01:37:42 +0900: plugin/in_forward.rb:62:listen: listening fluent socket on 0.0.0.0:24224
2012-01-25 01:37:42 +0900: fluent/engine.rb:148:rescue in run: unexpected error error="Address already in use - bind(2)"
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/cool.io-1.1.0/lib/cool.io/server.rb:57:in `initialize'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/cool.io-1.1.0/lib/cool.io/server.rb:57:in `new'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/cool.io-1.1.0/lib/cool.io/server.rb:57:in `initialize'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/plugin/in_forward.rb:63:in `new'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/plugin/in_forward.rb:63:in `listen'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/plugin/in_forward.rb:40:in `start'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/engine.rb:171:in `block in start'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/engine.rb:170:in `each'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/engine.rb:170:in `start'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/engine.rb:135:in `run'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/supervisor.rb:301:in `run_engine'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/supervisor.rb:83:in `block in start'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/supervisor.rb:170:in `call'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/supervisor.rb:170:in `main_process'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/supervisor.rb:145:in `block in supervise'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/supervisor.rb:144:in `fork'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/supervisor.rb:144:in `supervise'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/supervisor.rb:76:in `start'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/lib/fluent/command/fluentd.rb:128:in `<top (required)>'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/gems/fluentd-0.10.9/bin/fluentd:6:in `<top (required)>'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/bin/fluentd:19:in `load'
  2012-01-25 01:37:42 +0900: fluent/engine.rb:149:rescue in run: /usr/local/rvm/gems/ruby-1.9.2-p290/bin/fluentd:19:in `<main>'
2012-01-25 01:37:42 +0900: fluent/supervisor.rb:160:supervise: process finished code=0
2012-01-25 01:37:42 +0900: fluent/supervisor.rb:163:supervise: process died within 1 second. exit.