I think something is wrong with my CPU's Speed

I am using an Core 2 Duo @ 3 GHz processor (E8400), today i ran CPU-Z and it says the speed of the processor is only 2GHz.

http://img188.imageshack.us/img188/2809/only2ghz.jpg

Any help is greatly appreciated, and i am very sorry if a question of this sort was already answered.
Thank You.

see the multiplier below core speed…