I am using the version bundled with LWJGL.
Looking in their subversion repository, they haven't updated it for 6 months, so I'm thinking that is using the direct input plug-in for mouse and keyboard updates. Direct x according to this
article doesn't do any keyboard mapping, so you'll get US layout only. The new Raw plug-in I think is mapped as per your keyboard setup.
I can't interpret the output of the webstart demo, so I will try my own testcase with the new release at home.
It should have a window with the name of your keyboard on it, and a list of keys, and pressing the keys on the keyboard should show the right things.
Let me know how your testing with the latest version goes, I'd be interested in some feedback.