This might not be a bug, but it sure is annoying.
In notification e-mails the links used to get to the thread/post refer to x.overclock.net. For the past week or so I've not been able to follow these links. The name resolves, but there's no response on the other end.
x.overclock.net seems to refer to jngo.net (209.273.141.223). Seems that system is down or something as I can't ping it. Thought it might be my ISP, but I also can't ping it from my UK-based VPS.