I can set passwords just fine. When I do a 'su -' after boot, I get the root prompt. Next I change the password for root, exit back to the knoppix user and when I attempt 'su -' again, I have to enter the password I changed. So changing passwords is not the problem...that works fine. The problem is KDE is not recognizing or not paying attention to the passwords.

Once the passwords are changed, locking the screen with KDE's menu option (Lock Session) does not actually lock it. Simply moving the mouse puts me right back to where I was. I'm not prompted for a password nor does it blank the screen (the screen saver session). I don't know if its relevant, but when I go to the KDE control panel, I'm give two screen saver options, blank and random...nothing more. This would indicate 'xscreensaver' is *not* installed...this could also be what is causing the lack of screen locking...don't know.

--david