pkg_add not working

Hi,

I am running HEAD and recently started getting errors on pkg_add.

uname: 10.0-CURRENT FreeBSD 10.0-CURRENT #103 r249396M: Thu Apr 11 23:25:06
PDT 2013

> pkg_add -r sudo
Error: Unable to get
ftp://ftp.freebsd.org/pub/FreeBSD/ports/amd64/packages-10-current/Latest/sudo.tbz:
File unavailable (e.g., file not found, no access)
pkg_add: unable to fetch '
ftp://ftp.freebsd.org/pub/FreeBSD/ports/amd64/packages-10-current/Latest/sudo.tbz'
by URL

This used to work pretty well until a few days ago. Any clues?

best
Neel