[progrock]

I find that the nipple requires a little too much pressure (T500), which is a little tiresome. You can be really light to the touch with some touchpads (including simulated clicks.) I'd prefer a nipple more like a touchpad - something like you get on the Blackberries (not the old trackballs.)

[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.

[jamesbritt]

I run Kubuntu on a W500 and set mouse sensitivity way up:

     xset m 5 1

so that I can move the cursor with a fairly light touch.

[giulianob]

You can tweak the pressure and speed