With syndaemon to disable as you type put in a script:

.kde/Autostart/syndaemon.sh

#!/bin/bash

syndaemon -i 1 -d



Enable/Disable for good:

Create the file /etc/hal/fdi/policy/shmconfig.fdi

<a href="shmconfig.fdi">shmconfig.fdi</a>
 

Then enable disable with the following script:

#!/bin/bash

if [[ `synclient  -l | grep TouchpadOff | awk '{print $3}'` == "0" ]]
then
  synclient touchpadoff=1
else
  synclient touchpadoff=0
fi