Ernesto writes:
Internet provider Cox is not required to hand over the personal details of several subscribers, a federal court in Virginia has ruled. The customers in question simply couldn’t be guilty of copyright infringement because they had no Cox subscription at the time of the alleged offense.
Read more on TorrentFreak. It seems that Cox screwed up by notifying customers currently assigned to the IP addresses that they would be providing their personal details instead of those who had been assigned the IP addresses at the time of the alleged infringement.