Recently I can't use Facebook, Youtube and some other webpages in any Linux distro that I install on my Thinkpad T420.
I've been using Xubuntu for about one year and it happened about three weeks ago. Back then, I was able to use Google Chrome to replace Firefox but now not even Opera can load, e.g, www.facebook.com or www.youtube.com.
I am typing from a fresh install of Xubuntu.