I received a letter from Comcast that a movie company (Liberty Media Holdings LLC) is subpoenaing my information because they got my IP address showing that I downloaded a movie from a BitTorrent site. I did download the movie but I did not distribute it. Comcast says I must file a motion to quash or vacate or else they will provide this company with my information. I have never had this happen and I don't know what to do. I appreciate any help.