Touchpad control under KDE linux

1. install kde-config-touchpad package.
2. Run Utilities->Touchpad Management and the application will have the option in GUI. (http://askubuntu.com/questions/46299/how-to-disable-touchpad-tapping-when-typing-on-keyboard)

 NOTE:
might not run properly from GUI.

In my case: $ sudo synaptiks did the job.