There seems to be a DOS attack causing problems for connections routing through AT&T's network. Here is a notice from the datacenter that host's my web hosting server:

A large inbound Denial of Service attack is saturating connections to one of our providers. As a result some inbound traffic (that which gets routed over that provider) is experiencing high latency and timeouts. All other providers are fully functional, the routing is handled by the source network as such the issue will appear inconsistently across client connections. We are working with the affected provider to block the attacks and hope to have it resolved as soon as possible.

If you're interested, here are the traceroute results.

I think this explains why I was having so many problems with my Verizon FiOS connection at home this morning. I was cursing Verizon left and right wondering why I couldn't connect to half the Internet!