I believe the server was being rebooted. If you're a member of "Dhamma Wheel on Facebook" on Facebook, then there was a link posted to the hosting provider's run-sheet of events.
We endeavour to use that group as an information source if/when Dhamma Wheel or Dharma Wheel are ever down for decent amounts of time, so as to keep members informed.
"Do not force others, including children, by any means whatsoever, to adopt your views, whether by authority, threat, money, propaganda, or even education." - Ven. Thich Nhat Hanh
"Whether I were to preach in brief, Sāriputta, or whether I were to preach in detail, Sāriputta, or whether I were to preach both in brief or in detail, Sāriputta, rare are those who understand." (A I 333, Sāriputtasutta)