Update: these steps seem to work on Ubuntu Natty/11.04 for me, as well.
My fellow citizens, our long national nightmare of having to use bad pointing devices is over.
Starting with Ubuntu Maverick/10.10, configuring scrolling with the middle button and the TrackPoint is now really easy:
- Install gpointing-device-settings (sudo aptitude install gpointing-device-settings)
- Run gpointing-device-settings &, enable the Use wheel emulation using button 2, and enable both vertical and horizontal scrolling.
(gpointing-device-settings is not new but Maverick is the first time it has really worked well for me.)
Update: some people are reporting that g-d-s settings are lost after suspend. If you run into this, you might try these alternative instructions.