When I try to access Yahoo mail, I get a series of messages the include s.yimg.com. Currently, I am unable to reply or compose e-mails. I have checked the internet for solutions, and some of the links that I click on produce a warning that the site is unsafe. One site that I was able to connect to suggested removing Firefox and reinstalling it. I tried that and I still have the problem. What is the safe way to remove s.yimg.com?