>>rozenm+O
also went down if you went to login, and people's individual pages were also down. So as far as I saw the front page was up as long as you were not logged in, however I'm not sure if that wasn't just luck of the draw, I had one experience where it looked like maybe the front page was sometimes down for not logged in users as well.
on edit: ok others pointed out it was cached pages I saw. explains it.