Yes, the backlight is the only thing that doesn't work so well. I can control the backlight - I think I had to tweak some setting that I found on Google, but I don't remember which - but its auto-darkening on inactivity is pretty broken. When I move the mouse or type a key, the screen brightens again, but only about halfway back to what it was before the auto-darken, so I then have to manually jack the brightness up each time this happens.
Hoping some new driver release will fix this some time, but it's only a minor irritation.
BTW, your link [1] seems to be broken?
I love the trackpoint. I've disabled my touchpad completely.