There are a couple touchpad manufacturers but mine is synaptics. If this is the case with yours, you can install gsynaptics to have a gui way to configure it. You can also disable it globally by editing your /etc/X11/xorg.conf (actually even to use gsnaptics you'll have to edit it).
The first step is to open /etc/X11/xorg.conf as root in your favorite text editor. Find a section that looks like:
Code:
Section "InputDevice"
Identifier "Synaptics"
Driver "synaptics"
Option "Device" "/dev/input/mice"
Option "Protocol" "auto-dev"
Option "Emulate3Buttons" "yes"
EndSection
Add the SHMConfig option for gsynaptic and the MaxTapTime option to disable tap to click
Code:
Section "InputDevice"
Identifier "Synaptics"
Driver "synaptics"
Option "Device" "/dev/input/mice"
Option "Protocol" "auto-dev"
Option "Emulate3Buttons" "yes"
# required for gsynaptics
Option "SHMConfig" "true"
# disables tap to click
Option "MaxTapTime" "0"
EndSection
Save the file, then log off and back in. You should be free of your tapping woes.