title: use instruments - leaks with a device
body: <p>I'm starting to use Instruments-Leaks with an iPhone 3G. When I try to run the app with Instruments on the iPhone I obtain</p>
  
  <pre><code>Target failed to run: Remote exception encountered: 'Failed to get task for pid 280'
  </code></pre>
  
  <p>Ideas?</p>
  
  <p>The only time I succeed in running the app with instruments it run very slow, I couldn't test it. 
  What are the steps to run the app on the device searching for leaks?</p>