Why do X Window menus and dialog boxes not work right?

Try turning off the Num Lock key.

If your Num Lock key is on by default at boot-time, you may add the following line in the Keyboard section of the XF86Config file.

    # Let the server do the NumLock processing.  This should only be
    # required when using pre-R6 clients
        ServerNumLock

ASGAUR