Just an FYI... The new ktorrent (v 3+) does not include the configure like before. Rather they have you create a build directory and from that run the command... well here are the instructions from their site.
tar -xvjf ktorrent-3.X.Y.tar.bz2
cmake -DCMAKE_INSTALL_PREFIX=`kde4-config --prefix` ..
sudo make install
From what I have noticed so far, it seems this is pretty standard for kde4 apps.
Just something to keep in mind.