I'm running Natty with a clean install on a MacBook Pro (with no OSX install) and currently loving the switch! I found the area in keyboard layout options to map ctrl to the win keys (and the usual ctrl keys) and that turned my command key into a ctrl key which I'm used to from mac osx (working perfectly yesterday.)
However, now when I try, it's not working and the settings are still the same... I've tried to add different keyboards (worked with my original Canada English default yesterday... tried US Macintosh and set Keyboard Model to MacBook Pro (both regular and intl, neither worked.)
It was really weird because for a second my right command key was working as expected but not the left, and now neither are working.
Any thoughts or suggestions would be greatly appreciated.