title: Xcode uses big memory, eats all memory in ram
body: <p>I use Xcode on my mac, which has 8GB ram.  When I open Xcode and don`t open any project and wait about 2 minutes, Xcode eats all the memory in ram, (4GB, 5GB...)  </p>
  
  <p>Can anybody tell me why and how to fix this?</p>