Comment 67 for bug 636045

Does everyone here have a CPU with Intel Turbo Boost? TB is designed to come in under load and scale back when temperature or power limits are exceeded. The message itself and the reports of when it is happening seem to correspond to when TB would be kicking in and then turning off due to heat or power limiting.

If that is the case, then it is not an error message per se but a note showing TB is working as expected.