ZOMBIE iceweasel and icedove simultaneously !

[rajibando]

Dear knp, you have not elaborated how are you killing your applications? I stick to knoppix 7.2.0, I don't seem to have a system_killing_process. And it appears that I won't be in a position to help you because you use something based on Knoppix and not Knoppix. I would rather that you elaborate your steps with a snapshot.

Language translation should be not a big deal, you write in French and let Google Translate translate it to English. It is not perfect, but works.

Killing an app is very easy from the CLI. For that you need to understand codes.

I hope a senior member helps you.

There are these things to learn (not immediately, of course, but gradually, according to your time and patience):
(1) How to run commands in CLI, and this is available in man pages, which is technical and difficult to understand for a lay user, but follows a structure accepted throughout the short history of computers. Anyway, you decide. Go to /usr/share/man and see the list of man pages. Whatever you have there, without the extension name, can be read with command "man name", e.g., "man man" for knowing about man pages, man gedit for reading about gedit, etc.
(2) Bash scripting tutorials would help you understand how to use commands together. You choose whichever you can understand. Search in the net for bash tutorials.
(3) https://wiki.debian.org/ read these wikis, when you find time. They will help.
(4) https://www.debian.org/doc/books, one of which would definitely help you, depending on your level of computing awareness.