It's been a long time coming but wansecurity.com has finally come on line; they are hosting the 'other' files (includes goodies like Picture of the Year collections, pageview and other stats), as well as MediaWiki tarballs and the historical XML archives, at present. we're talking with them about expanding the mirror to other content as well.
See: http://meta.wikimedia.org/wiki/Mirroring_Wikimedia_project_XML_dumps#Current... for the mirror, http://www.wansec.com/ for the company and http://www.wansec.com/Services/RemoteBackup for the service which they are donating.
Ariel