When you downloaded the torrent was it recently uploaded?
Did it have sufficient peers/ seeds/ leeches??
*dw what they mean*
The more the better!!!!
If not DL the newest most popular torrent of the file you want.
You may also have to enable your listen port
which your torrent software will tell you in options or on the bottom toolbar somewhere.
Then go to
www.portforward.com to find out how to activate it via your router. *This will only make it download faster * to get it started you will need a popular torrent.
ONE WITH LOTS OF SEEDS /PEERS/ LEECHES.
Also check that your firwall is allowing your p2p program (torrent software) to access the net.
Hope it works !!!