What browser are you using? In IE, click on Tools/Internet Options.. Then click on the content tab, in the bottom section click on Auto Complete. Then click on the Clear Forms button. Uncheck the box next to Forms if you don't want IE to remember any more. Thats how I do it anyways. But I don't use IE all that much.
If your using Firefox, go to Tools/Options/Privacy/Saved Form Info. Click on clear and uncheck the box.
Your arrogance is boring!