I urge everyone experiencing this bug to get their hardware checked (hopefully under warranty). For me (X201 tablet), having the fan replaced (and I think thermal paste applied correctly) brought temperatures down from ≈60°C‒65°C idle and 80°C‒100°C (+shutdown) under full load, to <60°C under full load.
This is not to deny the existence of the software bug: the combination of overheating-prone hardware with the slow fan software bug is producing the obvious effects for at least some of those affected.
I urge everyone experiencing this bug to get their hardware checked (hopefully under warranty). For me (X201 tablet), having the fan replaced (and I think thermal paste applied correctly) brought temperatures down from ≈60°C‒65°C idle and 80°C‒100°C (+shutdown) under full load, to <60°C under full load.
This is not to deny the existence of the software bug: the combination of overheating-prone hardware with the slow fan software bug is producing the obvious effects for at least some of those affected.