title: Jekyll's "--auto" doesn't work?
body: <p>I have just reinstalled my whole system and started working on my projects again. I used and still use Jekyll in some of them however I have a problem with auto generation using <code>--auto</code> or <code>_config.yml</code>'s <code>auto: true</code>. It simply doesn't work. The output for <code>jekyll --server --auto</code> is:</p>
  
  <pre><code>Configuration from /home/rafal/Documents/Projects/ruby-adventure/_config.yml
  Auto-regenerating enabled: /home/rafal/Documents/Projects/ruby-adventure -&gt; /home/rafal/Documents/Projects/ruby-adventure/_site
  [2013-03-23 19:09:53] regeneration: 1 files changed
  [2013-03-23 19:09:53] INFO  WEBrick 1.3.1
  [2013-03-23 19:09:53] INFO  ruby 2.0.0 (2013-02-24) [x86_64-linux]
  [2013-03-23 19:09:53] WARN  TCPServer Error: Address already in use - bind(2)
  [2013-03-23 19:09:53] INFO  WEBrick::HTTPServer#start: pid=3288 port=4000
  [2013-03-23 19:09:53] regeneration: 1 files changed
  [2013-03-23 19:09:54] regeneration: 1 files changed
  [2013-03-23 19:09:54] regeneration: 1 files changed
  [2013-03-23 19:09:54] regeneration: 1 files changed
  [2013-03-23 19:09:54] regeneration: 1 files changed
  [2013-03-23 19:09:54] regeneration: 1 files changed
  [2013-03-23 19:09:54] regeneration: 1 files changed
  </code></pre>
  
  <p>The output from <code>jekyll --no-auto --server</code> is:</p>
  
  <pre><code>Configuration from /home/rafal/Documents/Projects/ruby-adventure/_config.yml
  Building site: /home/rafal/Documents/Projects/ruby-adventure -&gt; /home/rafal/Documents/Projects/ruby-adventure/_site
  Successfully generated site: /home/rafal/Documents/Projects/ruby-adventure -&gt; /home/rafal/Documents/Projects/ruby-adventure/_site
  [2013-03-23 19:12:31] INFO  WEBrick 1.3.1
  [2013-03-23 19:12:31] INFO  ruby 2.0.0 (2013-02-24) [x86_64-linux]
  [2013-03-23 19:12:31] WARN  TCPServer Error: Address already in use - bind(2)
  [2013-03-23 19:12:31] INFO  WEBrick::HTTPServer#start: pid=3327 port=4000
  </code></pre>
  
  <p>...so no error pops up. The site generates fine but when I change a file, it isn't auto regenerated. Any ideas why?</p>