title: Xcode 3.2.3 - No SDK 3.1.3
body: <p>after having installed Xcode 3.2.3 with iPhone SDK 4 (Seed) on OSX 10.6 there is no SDK 3.1.3 more available. Is there any possibility to reactivate it?</p>
  
  <p>BR</p>
  
  <p>Sven</p>