Help, my Safari browser has been acting super strange lately! It keeps changing my default browser automatically from Google to Only Search (if you use the search engine Only Search it takes you to Yahoo.com). My search bar will onlysearch on Yahoo no matter what I do to make it Google. On top of that I get MacKeeper popups every time I click on a link. What is wrong with my computer and how do I fix it?! And its only been happening since i updated to 10.10.1 so i don't think its a virus.