====== Virtualbox ======

===== Error: VirtualBox: Error -10 in SUPR3HardenedMain! ======
Solution: 

    sudo chmod 4711 /usr/lib/virtualbox/VirtualBox

===== Keyboard Layout =====
The keyboard layout is set on the guest system itself. It can be changed by using the tools/configuration from the guest system like this for Debian/Ubuntu:

    sudo dpkg-reconfigure keyboard-configuration