Good link Only A Hobo, it was the one I had in mind. Though there's others that have suffered the same issue. I would highly recommend you going to get Norbie to help you sort this out. We've been trying to get to the bottom of this zips multiplying issue. But all the same, he will be able to sort it out for you very quickly. Just register at his site & follow his directions closely.
NorbiesWorld (click on link)
BTW you're not the 1st to report loads of porn suddenly showing up out of the blue. There's been at least one member who was extremely suspicious of their partner & ... (details private!) lol