This appears to be a BGP peering issue between Cox and nLayer that has just been resolved. A good chunk of the internet noticed it:
https://puck.nether.net/pipermail/outages/2012-December/005000.html
If anyone is still having trouble please provide traceroutes, they're extremely helpful.
And THANK YOU "Olde Farte, II" for noticing and reporting this problem.
- Cary
--Curator, FairfaxUnderground.com