Internet Explorer must download a Web page, and any necessary files such
as graphics, sound, or .avi files, to the Cache folder before the page
can be displayed. Even though the cache is set to zero percent, Internet
Explorer requires a persistent cache for the current session. The
persistent cache requires 4 MB or 1 percent of the logical drive size,
whichever is greater.
Shortcuts to sites visited in the current session are stored in the
History folder. When you quit Internet Explorer, all shortcuts in the
History folder are removed.