Most DTS sensors that get stuck get stuck as the sensor cools down when you switch from full load to idle. One or more sensors will start reporting the exact same number even though your CPU is cooling down. This can effect all sensors, 65nm and 45nm, but it seems to be a much bigger problem with the new 45nm chips.

Unfortunately, there is no solution and based on user feedback, Intel does not consider this to be a big enough problem to justify replacing your CPU for you. As long as your processor can crunch some numbers without over heating or melting then it is doing what it was designed to do.