This should be the case, if I run the TreeCacheView(2) demo on multiple nodes, the notification is how the GUI updates itself, and this works.
Can you check CallbackTest and come up with a unit test that show the listener is *not* called ?
I added printlns into the very first lines of my listener, and - you're right - it is called on all nodes.
They must be lost within my own code.
Thanks for confirmation.