Hi John,
I think there's a fair chance that replace machines exhibit the same behavior. Mine was replaced by Intel (in order to investigate the problem), but the replacement unit also has the Thermal Trip behavior.
I think Intel is not really trying to fix this phenomenon ;-(
And the suggestion to go for replacement might only temporarily decrease the pressure of complaining customers.
It's such a shame: a really nice machine with a continuously failing bios.
Ger