title: Why is xcode 4.2 much smaller in size than xcode 3.6.2?
body: <p>xcode 3.6.2 has size of about 4GB but the new xcode 4.2 for snow leopard has only 1.6GB, nearly 2.4GB less. </p>
  
  <p>Does the new xcode 4.2 miss something that xcode 3.6.2 has? </p>