if you look now the stuff is in that directory: as the files to pull are a lot mirrors are still syncing so you can experience things like that (or old version of packages still there with the new, and so on...).
one that seems already up-to-date now is carroll
http://carroll.cac.psu.edu/pub/linux...ons/slackware/
rsync://carroll.cac.psu.edu/slackware/