title: Getting "Program received signal:  “SIGABRT”" in iphone sdk
body: <p>I am getting this exception:</p>
  
  <pre><code>  malloc: *** error for object 0x754cab0: double free
   *** set a breakpoint in malloc_error_break to debug
   Program received signal:  “SIGABRT”.
  </code></pre>
  
  <p>I don't know why it was generated only in Iphone sdk 4.0 (device and simulator), but it was not generated in Iphone sdk 3.0 versions (device and simulator).</p>
  
  <p>Can anyone tell me what is going wrong so that I can update my app?</p>