I think you've just got a bit confused. The torrent file itself contains no actual data for the movie/whatever u want to dl. Its only a few kb so yeh it'll dl in seconds. You've still gotta download the file, and like the other guys said it all depends on how many people are uploading. If its a really obscure file that only 1 or 2 ppl have, you can easily be waiting a week for things to dl. that's the nature of torrents.
although you won't find this kinda material on it, i'd suggest tryin to get into a private tracker, like torrentbytes.com. As long as you keep a 1:1 ratio (uploads:downloads) you get awesome speeds (eg. 300-400kb/s)