Created attachment 330765 [details]
/etc/X11/xorg.conf used in trials 

Description of problem:

With the following in xorg.conf

Section "ServerFlags"
        Option "AllowEmptyInput" "no"
EndSection

every key press sends a corresponding character three times.  Makes it an interesting proposition to login through gdm, although a console does not have any issues and one can get to graphic session via startx where the same fun continues.  Backspace removes three characters too so it is not of much help.
Turning off "Key presses repeat when key is held down" does not change that.

With "AllowEmptyInput" set to "yes" one gets "Disabling Keyboard0", typing comes through evdev device and the problem disappears.

Version-Release number of selected component (if applicable):
xorg-x11-drv-keyboard-1.3.2-1.fc11

How reproducible:
every time I tried