title: When does ServiceConnection.onServiceDisconnected() get called?
body: <p>I'm messing with Android services, and I have found that <code>ServiceConnection.onServiceConnected()</code> gets called fairly predictably when I bind to a service.</p>
  
  <p>However, my <code>onServiceDisconnected()</code> method seems to never be called, even after the VM dies.</p>
  
  <p>I have logged debug messages on the service and show that all threads have been shutdown, etc. I know services are implemented as processes; are there threads I don't know about that are preventing the process from exiting?</p>