Oh, I've seen a case like this at the help desk I work at. Found a porn DVD in this one guy's laptop and he said is "friend" put it there. Then there was another kid that said is "friend" had been looking up and saving porn on his laptop and asked for us (me and the people I work with) to make sure that it is all gone.Draculafreak said:you probably wont be able to get rid of it automatically and you wont be able to find it manually, so i say back up your important files and wipe your hard drive.
Oh, and stop looking at porn in the future might help. =P
Sure my story is a little off topic, but hey it is entertaining.