Your not alone in having this problem.
there are a number of entries in the Techical support forum about this specific problem.
I think it has something to do with a virus or Trojan horse.
All these other people have the same thing.. a number of uninvited zip files coming when they are not supposed to.
Keep looking through the Sticky posts. I think you;ll find one there that has a link that describes exactly the same problem as you have.