title: Error with rails
body: <p>Starting with rails and I had a problem with 'rails s' and the following error appears:  </p>
  
  <pre><code>/usr/bin/ruby1.8: symbol lookup error: /var/lib/gems/1.8/gems/therubyracer-0.11.0beta5-x86_64-linux/lib/v8/init.so: undefined symbol: rb_intern2
  </code></pre>