I can't see any data for haskell.org on that page, apart from the fact that it is up right now. Furthermore, I very much question the data on currentlydown.com: According to it, Google, Facebook, YouTube, Yahoo! and Amazon were down on March 25th for roughly an hour. A much more probable explanation: currentlydown.com had problems, not the five of the biggest sites in the world. This undermines the trust in the rest of the outage reports a bit...