Chintan, its not that there is a problem withn utorrent or the movie torrents .... if u get this problem with movie torrents then there is a high probability that u'll get the same problem with other torrents as well..... you can do the folowing to eliminate it. ....

1) Free some bandwidth( if u are using almost all of ur bandwidth in up/down ) .... stop those ups/downs and retry the download.
2) Clear up ur cache.
3) try using some other browser(IE/firefox/safari)
This might also happen if there is a connectivity problem with the tracker( but the tracker was perfect) so the problem is from ur side.