how do i find out if my son and/or his friends are using my puter for porn? they know how to delete the history file, and may even be logging in under a different user name. i ask because I've have just run c cleaner and there were a lot of porn sites deleted. is that because they are being visited, or because my puter is blocking them. i know i could just change the master password, but i would like to know whats going on first. aloha and thanks in advance.