Update: And it seems they’re back online and I was just able to authenticate and then log into the server. Happy playing!
The site that does authentication for all users on all Minecraft servers, minecraft.net is currently down.
We’re up and running, but since you cannot authenticate you might not be able to login.
There are problems with our infrastructure that means our sites and services might not work for a while, hopefully it will be fixed soon. […] well, there’s nothing we can do but our sites aren’t going to be working that well for a while.