Seems this may be a case of "If you're in you're probably okay but don't log out or refresh or you'll be locked out too."
Sandycove is indeed still up, and I hear Newfoundland is as well (no news on Northisle) but I can't get into any of them either, with Chrome or IE. Just a whole lot of:
Whatever it is it's not Maint or everyone would have been kicked. Since it is the very wee hours in tech support land if actual humans are needed to fix it it may be a bit but *fingers crossed* it sorts itself before too long.
Really? That's weird. o.O