title: Xvfb failed start error
body: <p>I have Ubuntu 11.04
  I am trying to install Xvfb and CutyCapt in order to take a snapshot of webpage
  I followed a instruction  <a href="https://github.com/jaequery/cutycapt-installer-script-on-ubuntu/blob/master/install">https://github.com/jaequery/cutycapt-installer-script-on-ubuntu/blob/master/install</a>
  and I executed last line and it gives me an error</p>
  
  <p>xvfb-run: error:Xvfb failed to start</p>
  
  <p>Any solution for that?
  Thank you in advance</p>