Sigh. There is some software out there called "evidence eliminator." I used to think it was kinda silly, because why would anyone care what used to be on your hard drive, right? Now I know why. It seems like even if you (as you said) saw it, were disgusted by it (having unknowingly downloaded it with the rest of your red-blooded male type porn) and got rid of it, it would still be there, and you'd still have someone pointing a finger at you.
I don't download porn, but lord knows what's on my 'puter cause of those van damned popup windows. I'm thinking I'm gonna get me that there Evidence Eliminator, just to be safe.
Henrietta..."Web Washer" and "Eradicator" are two good programs that can be downloaded free.....they clean all "unwanted stuff?" from your files and hard drive. Usually set to erase at end of session, or can be set to eliminate what you have viewed at specific time periods...i.e., hourly, etc. Check them out. I have both...double security?? Paranoid?? No....just want to have much more available space on my computer.