After tweaking a little bit, this is the configuration I liked the most, with tapping disabled, and good acceleration. The file is /etc/X11/xorg.conf
Section "InputDevice"
Identifier "Synaptics Touchpad"
Driver "synaptics"
Option "SendCoreEvents" "true"
Option "Device" "/dev/psaux"
Option "Protocol" "auto-dev"
Option "MinSpeed" "0.7"
Option "MaxSpeed" "15"
Option "AccelFactor" "0.2"
Option "MaxTapTime" "0"
Option "SHMConfig" "true"
Option "HorizEdgeScroll" "0"
EndSection
Modify “MinSpeed”, “MaxSpeed” and “AccelFactor” to suit your needs.