Internettrafficreport isn't the most reliable (normally there are lots of zeroes on their graphs), but it does indicate a large change in some numbers.

Another place to check for good information is http://www.outages.org/

There have been a few incidents as of the past few days. Last night, there was a nationwide outage from Frontier that has since been resolved.

The day prior there was a triple failure in the Midwest as reported http://vielmetti.typepad.com/vacuum/2012/10/windstream-outag... that affected lots of services in a large area.