Disable/remove Cinnamon keyboard shortcurts

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http://askubuntu.com – I installed Cinnamon on Ubuntu 12.04 using sudo add-apt-repository ppa:gwendal-lebihan-dev/cinnamon-stable sudo apt-get update sudo apt-get install cinnamon Now I am looking for a way to disable the keyboard shortcuts ALTF7 (move window) and ALTF8 (resize windows). I already disabled those key bindings under Keyboard -> Shortcuts. This has no effect. I did not find them in gconf-editor under apps -> muffin . Does anybody know how to remove/edit/disable those key bindings ? (HowTos)