KTorrent 4.0 was released couple of days back after being in development for close to 5 months. It adds many new features, the big ones being magnet support and support for µTP protocol (bittorrent over UDP) along with many bug fixes.
Users of Kubuntu / Ubuntu Lucid will not be getting the new version automatically but as always you can install the new version from a Launchpad PPA. 
Note – Before proceeding ensure that you have added the Kubuntu Updates PPA. You can add the PPA by using:
apt-add-repository ppa:kubuntu-ppa/ppa
Open Konsole and type the following commands in sequence:
- apt-add-repository ppa:blca/published
- aptitude update
- aptitude full-upgrade
You should see KTorrent 4.0 in the updates list. Enjoy the new version.
Jim
30 May 10 at 1:22 am
Does not work for me. Says that packages like kdebase and others related to KDE are too old, usually X.X.1 in version difference. Running latest Ubuntu Lucid.
mmarc57
30 May 10 at 8:20 pm
Thanks,
works perfectly for me.
Jim
31 May 10 at 12:35 am
I get the following dependency problems:
ktorrent:
Depends: kdebase-runtime (>=4:4.4.3) but 4:4.4.2-0ubuntu4 is to be installed
Depends: kdelibs5 (>=4:4.4.3a) but 4:4.4.2-0ubuntu4 is to be installed
Depends: kdepimlibs5 (>=4:4.4.3) but 4:4.4.2-0ubuntu2 is to be installed
Depends: libktorrent1 but it is not going to be installed
Depends: libkworkspace4 (>=4:4.4.3) but 4:4.4.2-0ubuntu14 is to be installed
Depends: libsolidcontrol4 (>=4:4.4.3) but 4:4.4.2-0ubuntu14 is to be installed
Jim
31 May 10 at 12:44 am
Adding Kubuntu Updates ppa fixed the issue:
http://www.ubuntuupdates.org/ppas/31
Manas
31 May 10 at 5:24 pm
Thanks for the update Jim. I have updated the post now.
Chris
7 Jun 10 at 5:00 pm
Nice! Thank you!
Mirko
29 Aug 10 at 8:45 pm
I not have find Ktorrent 4.* in the repository, why?
I’ve used your instructions.