I bought three x201 3249-ct0 at one and half year ago in UK from the Lenovo official website, I used one, and other two for my friends, recently, my x201 and my friend’s are all face the those problem:
-- Random shutdowns over the course of the past months. -- Sleep usually doesn't work. That is, it'll shutdown.
I did everything after I read that post before I created this message.people from that post mentioned that the most x201 back to work after the motherboard is replaced, therefore my 3 x201 are seems the hardware issue. thanks.