Do you use a "download accelerator" program or your browser's download function?
In my browser (Opera 10.61) I can configure to save downloaded torrent files directly to a folder on my LAN - a folder which is "observed" by uTorrent automatically. This way I can download torrent files, click on save in Opera's open/save dialog and the rest is done automatically by uTorrent (on another computer in my LAN). Chalk it on my laziness that I selected this solution - it works OK for me for 99,… % of all my torrent downloads. It is a rare case when I have to work "manually" for a torrent download 🙂