Seth Forshee created a kernel patch and now the ALPS touchapd on this laptop and probably others is recognized as a touchpad instead of falling back to a psmouse.
So now you can use the Touchpad tab in the "Mouse and touchpad settings" (gnome) to control the "click to tap", scrolling and other features and you don't have to use the patched syndaemon from my previous post.
To install this fix on ubuntu just download this deb package, install and reboot. ( tested on Ubuntu 11.10 x86_64 ).
If you want to know all the details go through the comments on this bug report #545307