oh... well then I have no idea. My moms used to do that, I unchecked that and it was good.
My PC started getting slow on OE startup and that was already unchecked... I just exported all my address books, all my email, and then deleted the account. Upgraded OE with some MS patched and created a new account and then imported everything. Worked fine till I switched to Thunderbird. (Firefox's Email Cousin)