I'll assume I'm right to give them a second chance, maybe it's just the X1 that's going awry? I've read a lot of reports about the X1's 2013 models that describe the issue that occurred to mine.
Like I say, I love Thinkpads, even with this blip - my next laptop will still likely be a Thinkpad, be it IBM or Lenovo.
Sounds right to me. I have two X61s's that I refurbished for my kids (really just swapping in SSDs and a bit more RAM), one has IBM branding and the other has Lenovo branding.