Hi all,
I too have returned after a week's enforced absence.
I can confirm the problem was not with the DNS - pinging the IP address did not resolve.
I got some friends to do a traceroute, and compared it to my traceroute, and the interesting thing was we went along the same route - theirs succeeded, mine failed.
I did notice on their traceroute that the response time was much higher on the router that my isp failed to get through - so I wonder if it might have had something to do with "time to live" settings from my ISP.
Duncan