I cannot access it either, but it seems to depend on which ISP you're using and where you are located. I know some guys on the US east coast who could access it fine, but some in the midwest and west coast who can't 🙁
Many other seemingly unrelated sites are also down, so I do not know if there is a general Internet problem or not. I did not see any news items about any DoS attacks, major outages, or major virus outbreaks, so it's anybody's guess.