title: autoreleased with no pool warning?
body: <p>I have audio class that sample the buffer and with <code>NSNotification</code> it calls another class and send a data(int).</p>
  
  <p>I get this warning that runs many many times a second:</p>
  
  <pre><code>class __NSCFNumber autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool()
  
  class __NSCFString autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug
  </code></pre>
  
  <p>what does it means?
  yes I have <code>NSNumber</code> in that class and <code>NSString</code>.
  they are not allocated.</p>
  
  <p>do I need another thread?
  what's wrong?</p>