Start Menu button (keyboard) --> K menu?
I'm running KDE 3.3.2. The proper behavior for the KDE K menu when you press the Start Menu/Win button is for it to pop up, just as the start menu would pop up in Windows. If it's already up, pressing the keyboard button again will cause it to go down.
When I ran SuSE, this did not work. I tested Debian and Mandraked limitedly, and it seemed that the K menu worked properly. Slackware, ditto, but the behavior is kind of strange.
If I reboot (or login to a new session), I can press the start menu, and the K menu will work properly. However, after I've used the session for a while (obviously doing something, but I can't diagnose what it is), the K menu will no longer respond to the Start Menu/Win button keypress. Occasionally, it will fix itself in the middle of a KDE session, but generally, it will not respond again until I reboot. Does anyone else have a similar problem?