I know there are certain organizations that have programs that will search your hardrive for you and give you a list of any questionable sites. I don't remember the one that I've seen; maybe try doing your own search. They will do the search for free (takes a few minutes) and then will remove any of the files for a small annual fee. You'd be surprized at what comes up on the computer. I bought my computer new and have never gone onto any of those "questionable" sites. I always laugh at how friends of mine get sometimes dozens of emails each day from porn sites. I never get that stuff into my hotmail, because I never look at it in the first place. But regardless of that, there were a few things on my computer that could be seen as questionable anyway. I suppose once on the net, stuff creeps in even by accident.