I don't have a very fast internet connection, but after I installed avast, some of the sites don't load at all...these sites don't have any rating provided in the avast online security but they are legit sites (without any malwares)..also, when I disable the avast components from the system tray and browse the same website, it opens in a second or two...so which component of avast is doing that?? does it scan the sites before allowing the connection?? and can I disable those any how??