a fast bittorrent downloader

There are lot of bitttorrent client default already installed on Ubuntu is Transmission

Menu Applications→Internet

Then here good comparison of various bittorrent clients:

http://en.wikipedia.org/wiki/BitTorrent_client

Might be you want to try Deluge or Vuze (formerly Azureus, it need to install java)

or Aria2 (terminal command utility): aria2c - The ultra fast download utility

   aria2 is a utility for downloading files. The supported protocols are
       HTTP(S), FTP, BitTorrent, and Metalink. aria2 can download a file from
       multiple sources/protocols and tries to utilize your maximum download
       bandwidth. It supports downloading a file from HTTP(S)/FTP and
       BitTorrent at the same time, while the data downloaded from HTTP(S)/FTP
       is uploaded to the BitTorrent swarm. Using Metalink’s chunk checksums,
       aria2 automatically validates chunks of data while downloading a file
       like BitTorrent.

Hope this helps

Transmission comes with Ubuntu and can also have a web interface for remote torrent management.

I am using Transmission now but it's not fast enough.  How can I speed things up?

--- On Wed, 8/11/10, actionparsnip <email address hidden> wrote:

From: actionparsnip <email address hidden>
Subject: Re: [Question #120690]: a fast bittorrent downloader
To: <email address hidden>
Date: Wednesday, August 11, 2010, 1:14 AM

Your question #120690 on Ubuntu changed:
https://answers.launchpad.net/ubuntu/+question/120690

actionparsnip proposed the following answer:
Transmission comes with Ubuntu and can also have a web interface for
remote torrent management.

--
If this answers your question, please go to the following page to let us
know that it is solved:
https://answers.launchpad.net/ubuntu/+question/120690/+confirm?answer_id=1

If you still need help, you can reply to this email or go to the
following page to enter your feedback:
https://answers.launchpad.net/ubuntu/+question/120690

You received this question notification because you are a direct
subscriber of the question.

a) - you need to set a fixed ip for your Ubuntu pc

Accessing to your router configuration (refer to your router documentation or google):

b) - you need to redirect on your router the incoming traffic on the Trasmission defined ports to the ip of your Ubuntu pc
or put the ip in the dmz zone of router.

Please refer to https://trac.transmissionbt.com/wiki/PortClosed

Use healthier torrents with more seeds. The client is fairly moot here. The speed of your connection and speed of the peers uploading to you are the main players in speed.

You can try the massive swathe of clients. This page lists them. Try some and see which you like:
https://help.ubuntu.com/community/BitTorrent