Yup, I think you are spot on... I must have overwritten the INI.
Can you expose that setting in the GUI? It is SOOOO useful!
btw... thx for the great app. I used Speedfan for a long time until I got tired of it not working properly and it took me a few hours to find HWinfo. Only found it after I searched for 'speed control hp laptop' an pulled up an old post on a laptop forum.