Update: for (easier) instructions for Ubuntu Maverick/10.10 and later, click here. Another Ubuntu release, another set of X.org shakeups. Some things in X changed in Lucid (xorg 1:7.5+5 and higher), breaking existing Thinkpad TrackPoint scrolling configurations that modify files in /etc/hal/fdi/policy (like those you may have seen in this previous post). You can use gpointing-device-settings to ap