Comment 483 for bug 550625

http://people.canonical.com/~sforshee/alps-touchpad/psmouse-alps-0.9/psmouse-alps-dkms_0.9_all.deb
Fixed vertical scrolling issue in my Sony vaio vpceh15 laptop.
Two finger scrolling also works well..
But there remains jitter which is quiet annoying..
Anyway thanks to Seth Forshee for the fixes..