John,

> Note the EventSensor will fire every 500 ms. That should be changed 
> to wait many seconds/forever?. Say we propose a VM attribute that 
> indicates true event signalling then we could alter EventSensor...

I firmly believe this code to be obsolete. It used to work around a
problem which is fixed by now. So you should be able to just remove it
and wait forever.

Cheers,
  - Andreas