There seems to be a problem with node deletion in 4.1.0-alpha7-SNAPSHOT. PubSubManager#deleteNode creates the following message:
Request:
Response:
I think the namespace for the delete request must be “http://jabber.org/protocol/pubsub#owner”. I don’t know if the “from” attribute is required. Please have a look to the standard: XEP-0060: Publish-Subscribe