yeah i dont think intel has started to even produce hyperthreading cpus at lower speeds yet....besides they would go to 2.8 and 2.66 first when/if implemented i would assume
you are maybe just seeing the wcpuid shot, where it says hyper threading technology but its disabled or something right?
in this case, the bridges to enable ht are physically there, just not connected to each other to allow the feature
its teh same story as the multilplier and how its locked, the bridges to enable all mults are present in all p4's but intel burns out specific bridges according to the cpu's mult