A number of sites of major global, including Facebook, Google Apps, Tumblr, Dropbox, as well as YouTube experiencing breaks in service today October 26, 2012, due out servers Amazon's AWS and EC2 for service, which prevent millions of browsers today and access to these sites. Where to within an hour of writing there are still problems in the Youtube site, as well as instability in the social networking site Facebook, as well as Dropbox.
As Dahr the site downrightnow.com the Facebook site, as well as Google and YouTube are still suffering instability.