title: can't open rails server
body: <p>I don't know what I did. I think I updated my Ruby on Rails. After updating it, I always get error when running $rails server. </p>
  
  <p>output is </p>
  
  <pre><code>ruby-1.9.2-p290/lib/ruby/1.9.1/webrick/utils.rb:73:in `initialize': Address already in use - bind(2) (Errno::EADDRINUSE)
  </code></pre>
  
  <p>I would restart the console and run rails server and it would work fine for a couple of minutes but then it would stop responding and if I restart rails server it would give me that error again. I tried running on different port (rails s -p 9191) and it gives me the same problem.</p>
  
  <p>Any Ideas what I did wrong? Thnx guys </p>