Had problems with the touchpad on my laptop, couldnt find an option to stop the double tap. Thelis recommended a link and that made it worse lol, couldnt boot any more.
I had to rebuild the xorg.conf file to get it working again. Once i done that i had to add an extra line to the file to stop the tap. The line i added was Option "MaxTapTime" "0" Just incase anyone here has the same problem.