Time for the weekly MAME update; grab it from the Latest Release page.
Apologies if you have tried to grab a full release or development tools over the past few days. I am currently experimenting with techniques to be nicer on this server, since it is a shared server and MAME can suck up an awful lot of bandwidth! As of tonight, all the full releases are now mirrored over at the old mame.net site, and links are appropriately updated here. The only thing missing is the development tools, which I hope to have back online shortly.