I agree with RJ713 on what you'll need to do here.
You likely have something running on your system you don't want. Check out this article from Ars [http://arstechnica.com/information-technology/2013/08/download-me-ii-removing-the-remnants-of-the-webs-most-dangerous-search-terms/|Download me II—Removing the remnants of the Web’s most dangerous search terms]. Hopefully it will help you in the future.