After many years long break I have started to use the Linux at work. I
use the Lenovo x61s connected to the 24" screen and to the shared
keyboard and mouse (I have got a modern 12-core AMD box as my main
computer recently, it has to run Windows, of course).
I use the Linux machine for teaching purposes (for making of LaTeX
slides, for drafting of XFig images and so on). I also do some light
programming/debugging here.
Actually, I am waiting for a new device: the MNT Reform. Most probably
it will not be faster than the old good x61s but (being a newly made
device) it should be more reliable. After all, the x61s was already a
second-hand device when I got it in 2011.