I don't know if "googleadservices" is an uninvited addon or virus but it inserts itself at the start of any webpage searched for. It effectively prevents the web page from opening at all, der! I cannot find any way of removing it, and ineffective advice has driven me to uninstall Firefox out of frustration, which of course is not what I want to do. From what I can see its been around for a number of years, so why is it still an issue in Feb. 2018?