8.0 BETA: touchpad taps occur while typing

[Mayuresh <mayuresh%acm.org@localhost>]

I am using base X11 of NetBSD 8.0 BETA i386.

While typing on laptop keypad, thumbs inadvertently touch the
mouse-touchpad and simulate double tap. In a terminal it ends up selecting
part of the screen, and in graphical interfaces too many annoying things
happen.

What is the way to disable this?

Following information might help.

# grep -i mouse /var/log/Xorg.0.log
        Using the default mouse configuration.
[    50.092] (II) LoadModule: "mouse"
[    50.093] (II) Loading /usr/X11R7/lib/modules/drivers/mouse_drv.so
[    50.107] (II) Module mouse: vendor="X.Org Foundation"
[    50.202] (==) intel(0): Silken mouse enabled
[    51.086] (II) Using input driver 'mouse' for '<default pointer>'
[    51.156] (II) <default pointer>: found Device "/dev/wsmouse"
[    51.158] (--) <default pointer>: Device: "/dev/wsmouse"
[    51.158] (==) <default pointer>: Protocol: "WSMouse"
[    51.158] (**) Option "Device" "/dev/wsmouse"
[    51.170] (II) XINPUT: Adding extended input device "<default pointer>"
(type: MOUSE, id 6)

# dmesg | grep -i -e mouse -e pms
pms0 at pckbc2 (aux slot)
wsmouse0 at pms0 mux 0

Mayuresh