TW Cable had a nationwide outage this morning as reported on twitter and TheVerge. Internet slowdowns and outages were still being reported by Noon Eastern time.
According to the NANOG chatterbox, Level3 & TWC are having the same problem: it appears that Juniper routers are doing a core dump due to a BGP advertisement that triggers a bug. BGP peering causing a number of crashes on the Juniper platform for the last year or so. Unsure if that's related to this problem or not, but the saying one hears frequently is "IPv6 bgp peering isn't as widely tested as the vendors would have you believe"."
I'd use this outage to sell redundancy!!!