We're just doing some maintenance to our files server which necessitates taking it offline for a couple of hours - you won't be able to start downloads during this outage window, but existing downloads will have a hopefully decent chunk of time to complete.
Apologies for any inconvenience; please stay tuned.
For those interested in the gory details, we're making some minor changes to the VPS on which the file server is hosted to take advantage of some
new reporting features that have just been rolled out into Mammoth VPS. They'll give us more insight into how our primary file server operates with respect to disk I/O, memory and CPU usage. Fun!