[donatzsky]

You can change the sensitivity in the settings (and of course, there's the usual mouse-speed setting as well).

That said, I have found that some of the newer models have much more sensitive trackpoints than my T60.

Edit: Changing the cap can be useful as well. The concave tip in particular.

[progrock]

I've tried playing around with the trackpoint speed under Xfce, and it doesn't help that much. The pressure needed although not much, is enough to put stress on my upper body.