FreeBSD: freebsd-update и Fetching public key from updateX.FreeBSD.org... failed.

freebsd-update fetch
Looking up update.FreeBSD.org mirrors... 4 mirrors found.
Fetching public key from update5.FreeBSD.org... failed.
Fetching public key from update3.FreeBSD.org... failed.
Fetching public key from update4.FreeBSD.org... failed.
Fetching public key from update2.FreeBSD.org... failed.
No mirrors remaining, giving up.



DESCRIPTION
     The freebsd-update tool is used to fetch, install, and rollback binary
     updates to the FreeBSD base system.  Note that updates are only available
     if they are being built for the FreeBSD release and architecture being
     used; in particular, the FreeBSD Security Team only builds updates for
     releases shipped in binary form by the FreeBSD Release Engineering Team,
     e.g., FreeBSD 6.1-RELEASE and FreeBSD 6.2-RC1, but not FreeBSD 6.2-STABLE
     or FreeBSD 7.0-CURRENT.

Так что обновлять так можно только -RELEASE ветку. STABLE - через csup (уже не рабочий) или svn + make

For SVN use the releng/10.0 branch which will be where any upcoming Security Advisories or Errata Notices will be applied.

Если проблема именно с RELEASE - пример запуска с отладкой
freebsd-update -v debug fetch