It's normal. It's most likely a function called Enhanced Intel Speedstep. It will automatically reduce your CPU's core frequency and voltage when the CPU isn't under load. However, as soon as you put the CPU under load, it should return back to normal frequencies. So in actuality, the temp you are seeing is coming when the CPU is working at it's full 1.83ghz. It is a little high, but it is probably just a function of your laptops cooling ability.