All of a sudden my external keyboard got the wrong keyboard layout, and keys I heavily use got remapped because of this.
My first guess was that I could change this by opening up ´System Preferences -> Keyboard´ and find a button saying “Change Keyboard Layout”, which should be there, but if its not here is a work around:
- Go to
/Library/Preferences - Delete
com.apple.keyboardtype.plist - Restart your computer
- Voilá, the Keyboard Setup Assistant should show up.
(I later found another dude having the same problem; https://discussions.apple.com/thread/2229413)