/var/cache/apt/archives/kontact-plugins_4%3a3.2.3-2_i386.deb (--unpack): trying to overwrite `/usr/lib/kde3/kcm_kontactknt.so', which is also in package kontact ----------------------------
Anybody have any idea how to fix this.
It is a bug in the kontact-plugins package. You can force it to overwrite the conflicting file (at your own risk!) by using sudo dpkg --force-overwrite -i /var/cache/apt/archives/kontact-plugins_4%3a3.2.3-2_i386.deb (type all in one line on your terminal) then run apt-get install kde again HTH.