title: objective c - Release a singleton property
body: <p>I have a singleton class that has an mutableDictionary. I initialise the dictionary in my root viewController. later on I would like to empty the dictionary and release the memory. Even though the retain count is 1 the release causes a crash:</p>
  
  <p>-[CFDictionary release]: message sent to deallocated instance</p>
  
  <p>is it possible to release a singleton property?</p>
  
  <p>Thanks</p>