1. If no expiration time is set, then Firefox automatically sets the expiration time for your page as: **Expiration Time = Now + 0.1 * (Time since Last-Modified)**. Meanwhile, for IE, you need to set **'Check for newer versions of stored pages'** to **'Automatically'**, so that IE will only check once per page during a session.
2. To force a page to reload, you need to add the following in the header:...