I have a Lenovo T410. So I don't for your models. But, I installed Kubuntu 10-10 then 11-04 on it and everything worked except for the scroll button of the trackpoint (which he detects as a middle click) but the problem was fixed following instructions from here:
enter link description here
Since 11-04 multi fingers scrolling scrolling work on the trackpad and so does the two-fingers and three fingers clicks.
Sleep, hibernate, shutdown, wifi and sounds worked perfectly out of the box.
My guess is that you won't have any problem with either Ubuntu, Kubuntu or Xubuntu.