My said model has both Synaptics Pointstick and Touchpad.
Problem is that the touch display led type button (in the touch buttons ribbon bar above functions keys), when touched, though visually does change color (from blue to orange and vice versa) to indicate the enabling/disabling of touchpad, has actually no effect at all.
In other words, when I touch this button, it doesn't disable my touchpad. I can very well disable the touchpad thru Windows 7 Ultimate 64bit control panel. But then this led indicator doesn't change color (it stays blue to indicate as if touchpad is enabled).
All drivers are properly installed (touchpad version installed V7.2 /V188.8.131.52 Dt 28.03.2011).