If the polling intensity is zero, specifically
disable polling for that device/sub device.
Have zwave startup wait until the zwave
nework is ready (defined by python openzwave docs):
https://python-openzwave.googlecode.com
SIGNAL_NETWORK_AWAKED : all awake nodes are queried. Some sleeping nodes may be missing.
and
You can safely ask node informations when state >= STATE_AWAKED
This appears to make the polling of nodes a bit more deterministic.