Well I don't know if this is a coincidence but although Eclipse's status page was showing the incident closed at 2.30pm I still was not able to connect to the internet except through TOR. This got me thinking. TOR uses it's own DNS, so I changed the DNS in Airport Utility back to Eclipses' ( wasn't using theirs before ), rebooted the Airport Extreme and, goodness me, back to ordinary internet. Very odd. I'll try putting the other DNS back in now and see if it happens again.
2.66 GHz 15" Macbook Pro OSX 10.6.8