My Firefox has been running very slow since I moved back to the states from Switzerland two years ago. As my question above states, I purchased my computer in Switzerland, and it has the European (Great Britain) version of Firefox. When I access the "about" feature, it states "Firefox 50.1.0 ; Mozilla Firefox EU; with euballot - 1.1" Since my return to the states, the automatic update feature on Firefox has worked just fine, but it has not converted the basic program to the U.S. standard. I am wondering if the reason web pages are loading so slowly here has anything to do with the fact that I am running the European version of Firefox?