title: Xcode stuck on Indexing
body: <p>A project I've been working for 2 months stopped working for no reason because Xcode got stucked on "Indexing". I can't Build the project anymore. If I try to build, Xcode freezes and I have to force quit. This happens only with this project.</p>
  
  <p>I tried cleaning all derived data but didn't help.</p>
  
  <p>I'm using Xcode 4.5.2.</p>
  
  <p>Any ideas?</p>