morsik@vader:~$ sudo apt-get install jackd
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  install-package: Depends: gdebi-kde but it is not going to be installed
  jackd: Depends: libjack0 (= 0.118+svn3796-1ubuntu2) but it is not going to be installed
         Recommends: qjackctl but it is not going to be installed
  kdebase-runtime: Depends: phonon-backend-xine but it is not going to be installed or
                            phonon-backend
                   Recommends: icoutils but it is not going to be installed
                   Recommends: kubuntu-debug-installer but it is not going to be installed
  libkopete4: Depends: kopete but it is not going to be installed
  ubufox: Depends: apturl (>= 0.1.2ubuntu1) but it is not going to be installed or
                   apturl-kde but it is not going to be installed
E: Broken packages