This weekend I did:
apt-get -t unstable install kaffeine kaffeine-mozilla
on my hdd knoppix install.

Kaffeine tried to install but (for some unknown reason) failed. Now my system boots but I have very limited functionality. The KDE menu has only a few entries. Can't start Konqueror or KMail. In fact, I can't even start a console window from inside KDE.

So I guess some files were overwritten and trashed. What to do? I'm thinking I must re-install Knoppix.

Too bad ProBono's post about klik came too late for me....
Any advice?