Have you tried looking for an identical torrent of it someplace else? Some torrents get uploaded to a number of independent trackers, but are all identical. If that's the case, you can actually add that torrent, and uTorrent at least, will know it's identical and ask to add the trackers listed in that torrent file. Of course, you could always make sure you get a reliable torrent by using TPB, or isohunt and making sure it says the torrent has seeders.