FYI: In PG 2, they have a number of "lists" of ip's identified as Spyware , etc. These block incoming and outgoing packets on the users PC. They also have a large P2P list of ip's. Recently, PG 2 has added Eset.spol.sro network with the following ranges being blocked: 22.214.171.124 to 126.96.36.199 188.8.131.52 to 184.108.40.206 220.127.116.11 to 18.104.22.168 So I will have to find an update server outside that range for Nod32 to continue to be updated. No, I don't know why Bluetack has added these servers to their P2P block list, but as I understand it, they research carefully before doing it. So for now I'm assuming that there is a good reason. Companies do this to try to track pirating of their digital products. If their is anyone with additional information please comment.