Go here and see if there is a traffic jam.
http://www.internettrafficreport.com/
My own loading of websites has slowed down this weekend with no pages loading at all then starting to after it seems to be minutes. It comes and goes. Maybe the NSA is jut doing a virus scan or maybe loading new ones on all our computers
Can you imagine having to wait more than 60 or 70 microseconds to get a response from the internet?