Description of problem:
"Left Hand" setting of mouse does not affect the USB mouse on my laptop.
But does affect the synaptic.

Version-Release number of selected component (if applicable):

xorg-x11-drv-mouse-1.0.4-1
xorg-x11-server-Xorg-1.0.1-9.fc5.1.1

How reproducible:

xmodmap, KControlCenter, whateve.
  

Additional info:
quote from /etc/X11/xorg.conf
......
  4 Section "ServerLayout"
  5         Identifier     "Default Layout"
  6         Screen      0  "Screen0" 0 0
  7         InputDevice    "Keyboard0" "CoreKeyboard"
  8         InputDevice    "Synaptics" "CorePointer"
  9         InputDevice    "Mouse0" "AlwaysCore"
 10         Option "Dontzap" "true"
 11 EndSection
......
 69 Section "InputDevice"
 70         Identifier  "Mouse0"
 71         Driver      "mouse"
 72         Option      "Protocol" "IMPS/2"
 73         Option      "Device" "/dev/input/mice"
 74         Option      "ZAxisMapping" "4 5"
 75         Option      "Emulate3Buttons" "false"
 76 EndSection
 77 
 78 Section "InputDevice"
 79         Identifier  "Synaptics"
 80         Driver      "synaptics"
 81         Option      "Device" "/dev/psaux"
 82         Option      "Protocol" "IMPS/2"
 83         Option      "Emulate3Buttons" "yes"
 84 EndSection
......