Bloodwar's right. Some other sites tend to pick up what's being seeded on the torrent sites like ours. So even though KAT's not currently seeding, both other sites, and other users might well be.
I turned on several old ones before I decided to add them to TPB, so nobody would lack for the torrents. Immediately I got about a dozen on each harpsichord release I put up. With 30 or so going, I also went from using about 30% of my monthly allocated bandwidth to roughly 85%. Some people just put my stuff in queue, and never asked for it--so when those uploads went live, the fish, they began snapping.