My web hosting provider has redundant Internet connections, one with Time Warner and the other with Sprint. Last week the switch on the Time Warner side lost power and when it came back online the routing tables on the switch lost the settings. This caused any web request that routed through the Time Warner side to fail. We weren't aware any problems since most of the traffic goes through the Sprint side.
I'm glad that you posted that you were having a problem or else I wouldn't have even noticed.