Hi Raymond,
I am using a powernode 1-node (node 7) and powernode 6-node (node

. As you can see below (DomotiGa logging), the powernode 1-node response almost directly, but it takes 7 seconds to the powernode 6-node to respond (and the responds still takes 2-3 seconds).
2012/10/17 20:05:00 [Z-Wave] Trigger listening nodes to update their values.
2012/10/17 20:05:00 [Z-Wave] Requesting node dynamic of listening node id 2.
2012/10/17 20:05:00 [Z-Wave] Requesting node dynamic of listening node id 4.
2012/10/17 20:05:00 [Z-Wave] Requesting node dynamic of listening node id 7.
2012/10/17 20:05:00 [Z-Wave] Requesting node dynamic of listening node id 8.
2012/10/17 20:05:00 [Z-Wave] Got value changed notification for node 2 and instance 1 value1 changed to On.
2012/10/17 20:05:00 [Z-Wave] Got value changed notification for node 2 and instance 1 value1 changed to On.
2012/10/17 20:05:00 [Z-Wave] Got value changed notification for node 4 and instance 1 value1 changed to On.
2012/10/17 20:05:00 [Z-Wave] Got value changed notification for node 4 and instance 1 value1 changed to On.
2012/10/17 20:05:00 [Z-Wave] Got value changed notification for node 4 and instance 1 value1 changed to On.
2012/10/17 20:05:00 [Z-Wave] Got value changed notification for node 7 and instance 1 value1 changed to On.
2012/10/17 20:05:00 [Z-Wave] Got value changed notification for node 7 and instance 1 value1 changed to On.
2012/10/17 20:05:01 [Z-Wave] Got value changed notification for node 7 and instance 1 value3 changed to 0.0000.
2012/10/17 20:05:01 [Z-Wave] Got value changed notification for node 7 and instance 1 value2 changed to 0.0.
2012/10/17 20:05:07 [Z-Wave] Got value changed notification for node 8 and instance 1 value1 changed to On.
2012/10/17 20:05:07 [Z-Wave] Got value changed notification for node 8 and instance 2 value1 changed to On.
2012/10/17 20:05:07 [Z-Wave] Got value changed notification for node 8 and instance 3 value1 changed to On.
2012/10/17 20:05:07 [Z-Wave] Got value changed notification for node 8 and instance 4 value1 changed to On.
2012/10/17 20:05:07 [Z-Wave] Got value changed notification for node 8 and instance 5 value1 changed to On.
2012/10/17 20:05:07 [Z-Wave] Got value changed notification for node 8 and instance 6 value1 changed to On.
2012/10/17 20:05:07 [Z-Wave] Got value changed notification for node 8 and instance 1 value1 changed to On.
2012/10/17 20:05:07 [Z-Wave] Got value changed notification for node 8 and instance 2 value1 changed to On.
2012/10/17 20:05:07 [Z-Wave] Got value changed notification for node 8 and instance 3 value1 changed to On.
2012/10/17 20:05:07 [Z-Wave] Got value changed notification for node 8 and instance 4 value1 changed to On.
2012/10/17 20:05:08 [Z-Wave] Got value changed notification for node 8 and instance 5 value1 changed to On.
2012/10/17 20:05:08 [Z-Wave] Got value changed notification for node 8 and instance 6 value1 changed to On.
2012/10/17 20:05:08 [Z-Wave] Got value changed notification for node 8 and instance 1 value3 changed to 0.0936.
2012/10/17 20:05:08 [Z-Wave] Got value changed notification for node 8 and instance 1 value2 changed to 1.2.
2012/10/17 20:05:08 [Z-Wave] Got value changed notification for node 8 and instance 2 value3 changed to 0.0000.
2012/10/17 20:05:08 [Z-Wave] Got value changed notification for node 8 and instance 2 value2 changed to 0.0.
2012/10/17 20:05:08 [Z-Wave] Got value changed notification for node 8 and instance 3 value3 changed to 0.0000.
2012/10/17 20:05:08 [Z-Wave] Got value changed notification for node 8 and instance 3 value2 changed to 0.0.
2012/10/17 20:05:08 [Z-Wave] Got value changed notification for node 8 and instance 4 value3 changed to 0.0000.
2012/10/17 20:05:08 [Z-Wave] Got value changed notification for node 8 and instance 4 value2 changed to 0.0.
2012/10/17 20:05:08 [Z-Wave] Got value changed notification for node 8 and instance 5 value3 changed to 0.0000.
2012/10/17 20:05:09 [Z-Wave] Got value changed notification for node 8 and instance 5 value2 changed to 0.0.
2012/10/17 20:05:09 [Z-Wave] Got value changed notification for node 8 and instance 6 value3 changed to 0.0000.
2012/10/17 20:05:09 [Z-Wave] Got value changed notification for node 8 and instance 6 value2 changed to 0.0.
So ... not much to fix i think ;(