title: What is required for an OS X app to run in sandbox mode?
body: <p>I have signed my OS X application including the sandbox entitlement as described here:
  <a href="https://stackoverflow.com/questions/8385252/how-to-build-sandboxed-app-without-xcode">How to build Sandboxed app without XCode?</a></p>
  
  <p>But when I open the application it runs outside the sandbox.  That is, in the Activity Monitor the process is listed with Sandbox = No.</p>
  
  <p>What else do I need to do to ensure the application runs in sandbox mode?</p>
  
  <p>(Note: I'm running OS X 10.7.4)</p>