keep an eye on that list, the last seen column should tell you if this is current of ancient activity, if he/she is seeding, correlating this with times your ro

keep an eye on that list, the last seen column should tell you if this is current of ancient activity, if he/she is seeding, correlating this with times your roommate is home (or his/hers pc on) should give you a good idea of whether this is him/her or someone else sharing your IP. Another such file coming up on that list is a strong indicator as well, and could help you even if he/she is no longer seeding. Keep in mind that remote control of a torrent client is possible. If you control the router you could try getting a new IP. All this without downloading the actual file