For the last several days, Facebook won't load at home on our two MBPs over our wifi - or, on the rare event that it does, it is slow and will not refresh properly - in either Firefox or Safari. Everything else loads without a problem - as does Facebook on the iPad on the same home wifi network. Just prior to this, we were travelling and using wifi outside of our our home - Facebook loaded on our MBPs perfectly then. Am not particularly tech-minded but have done/tried the following: Cleared the history, cookies, cache for both browsers Reset modem and router manually and also reboot the router via http://192.168.1.1/ Updated browsers The only thing of note that I can recall changing is that I've uninstalled Adobe Flash. Running OS X 10.10.5 Firefox 42.0 Safari 9.0.1 I just tried, as a thought, installing Chrome and Facebook opens perfectly??? I'd still like to work out why it's not loading in either of the other two browsers. Firefox is what I usually use. TIA.