I have a HPNA network using a 2wire HomePortal and AT&T DSL. Recently on one of my computers the 2wire PC Port USB HPNA adapter is being disabled randomly. It is as if someone has gone into my network connections and clicked "disable" for this local area connection. My other computers on the network use the same adapters and I have no problems with them. I have windows xp pro on all of the computers. Any idea as to why this might occur and what I can do about it?