title: Objective C NSMutableString* property retain count oddity
body: <p>if I create an nsmutablestring and then release it , shouldn't the retain count be 0? </p>
  
  <p>my retain count stays 1.</p>
  
  <pre><code>NSMutableString *text = [[NSMutableString alloc]init];
  
  [text release];
  
  NSLog(@"retain count %d ", [text retainCount]);
  </code></pre>
  
  <p>Am I missing something ?</p>
  
  <p>thanks.</p>