No I don't mean someone else is administering your machine, it's just that there is a difference (now) as to what you understand as being the administrator and what the OS does. It's not the same as old admin account. In the days pre-Vista, admin was the true master, now (out of the box) not so much. You can become a true admin but there is some hoop jumping, policy setting and ownership taking. The topic, as it would apply to your specific case is a bit too broad to cover in a forum post, so I'd suggest you google the subject of becoming a real admin.