For the 1420N, Dell released a fix at http://linux.dell.com/wiki/index.php/Ubuntu_7.04/Issues/Scrolling_feature_on_touchpad_does_not_work
For the 1420N, Dell released a fix at http:// linux.dell. com/wiki/ index.php/ Ubuntu_ 7.04/Issues/ Scrolling_ feature_ on_touchpad_ does_not_ work