The primary
LFNetwork server is having some fairly considerable problems right now and will not boot; as a result almost all sites on it are unreachable, although as far as we know the data is alive and we won't be suffering from a 2001esque catastrophic loss.
People are working with the datacentre the servers are hosted at to try and get things going again, but there's no ETA. LucasForums is fine as it's on a separate server.