First, you need to remove the broken package so that apt-get will work. Start by opening a console as root and type:
Code:
dpkg --purge kdelibs-data kdelibs4
This will remove all of kde, not to mention the broken packages and it's configuration files unless you were prudent enough to backup your configuration files in your home directory. Once done, you can try
Code:
apt-get -f install
Followed with a simulation for a base KDE install:
Code:
apt-get -s install -t unstable kde-core
If the output looks good, then remove the -s and let it go thru. If you rather have all of KDE, do this
Code:
apt-get -s install -t unstable kde
Remove the -s if the output looks good. In the future, you might want to use the -s switch with apt-get to make sure the new/upgraded packages won't break something before committing to the act.

HTH,

Durand