title: NSURLCache crashes under iOS 6.1
body: <p>Using iOS 6.1 my App crashes regulary, directly after startup, when it attempts to make several HTTP-Requests, but it works fine on any OS &lt; 6.1.</p>
  
  <p>I'm experiencing 
  <code>EXC_BAD_ACCESS</code> crashes in the <code>strlen</code> function called from the Queue : <code>com.apple.CFURLCACHE_work_queue</code>, everytime my App is started, except for the first time.</p>
  
  <p><img src="https://i.stack.imgur.com/BjArE.png" alt="NSURLCache crashes"></p>
  
  <p>I could resolve the issue by clearing the NSURLCache, directly after the app started:</p>
  
  <pre><code>[[NSURLCache sharedURLCache] removeAllCachedResponses];
  </code></pre>
  
  <p>Does anyone else experience these crashes? Could there be some issue in the application code causing these crashes? Or should this be a bug filed to apple?</p>