Microsoft Windows keeps a lot of "hidden files" on your computer outside of the cache.
Boot to DOS, type dir /p ah and view them. They are not visible when Windows has been started.
Unlike the Cache which can be erased, these files can't.
These files keep a copy of every URL you have ever visited, a copy of every Outlook message, and the name of every file that was ever on your computer.
I reccommend Window Washer:
http://www.webroot.com/wb/products/w...sher/index.php
More on these hidden files at:
http://www.nethole.com/articles/01/08/07/1442243.shtml