J'ai trouvé la solution, mais j'ai besoin d'aide pour l'anglais, si quelqu'un veut bien tout me traduire : "
This xml file should fix the "Keyboard shortcuts" no longer working in system preferences on french Mac OS X Tiger 10.4.10 systems with the update for new apple keyboards.
This fix is a "worksforme". I mean, it works on my computer, I see no reason it shouldn't work on others as well, but always be prudent, and keep a backup of the original file you will replace.
make a backup of the file located in /System/Library/PreferencePanes/Keyboard.prefPane/Contents/Resources/French.lproj and replace it by the one in this package, and make sure the rights, owner and groups are positionned like this :
-rw-r--r-- 1 root wheel 12086 2007-08-15 12:33 DefaultConfigKeysTable.xml