It's not just the DigiTrad mirror, but the whole of www.numachi.com that seems to have gone off the air. Google has an archived copy from December 7 here. fwiw...

Of course it may be a temporary situation and it may all be fixed and back up in a few hours or days, but who knows? There have been a few times when the Mudcat itself has gone down in almost as total a way.

Haruo