1) Go to Control Panel 2) click on Hardware and Sound tab
3) Find Synaptics TouchPad (at the very bottom for me) and click on it
4) Find where it says PalmCheck-Enhanced and click on it
5) Move the mouse right and click on the Settings button beside where it says PalmCheck-Enhanced 6) At the top, drag the arrow on the bar all the way left to turn it off.
I had to install the latest synaptics drivers for the option to show http://www.synaptics.com/resources/drivers I was using v. 184.108.40.206 from sept. 09. The latest ones as of today were v16.2.21 from nov. 2012 :)