Why is portupgrade retrieving firefox-9.0.1,1.tbz only to next confirm that
it is already installed and ignore it ?
Should the steps be performed in reverse ?

# portupgrade -PP firefox
[Updating the portsdb <format:bdb_btree> in /usr/ports ... - 23144 port entries found .........1000.........2000.........3000.........4000.........5000.........6000.........7000.........8000.........9000.........10000.........11000.........12000.........13000.........14000.........15000.........16000.........17000.........18000.........19000.........20000.........21000.........22000.........23000. ..... done]
---> Checking for the latest package of 'www/firefox'
** No such file or directory - /usr/ports/packages/All
---> Fetching the package(s) for 'firefox-10.0,1' (www/firefox)
---> Fetching firefox-10.0,1
fetch: ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-9.0-release/All/firefox-10.0,1.tbz: File unavailable (e.g., file not found, no access)
** The command returned a non-zero exit status: 1
** Failed to fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-9.0-release/All/firefox-10.0,1.tbz
fetch: ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-9.0-release/All/firefox-10.0,1.txz: File unavailable (e.g., file not found, no access)
** The command returned a non-zero exit status: 1
** Failed to fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-9.0-release/All/firefox-10.0,1.txz
fetch: ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-9.0-release/All/firefox-10.0,1.tgz: File unavailable (e.g., file not found, no access)
** The command returned a non-zero exit status: 1
** Failed to fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-9.0-release/All/firefox-10.0,1.tgz
** Failed to fetch firefox-10.0,1
** Listing the failed packages (-:ignored / *:skipped / !:failed)
! firefox-10.0,1 (fetch error)
---> Fetching the latest package(s) for 'firefox' (www/firefox)
---> Fetching firefox
/var/tmp/portupgrade8cD9grYr/firefox.tbz 100% of 26 MB 240 kBps 00m00s
---> Downloaded as firefox.tbz
---> Identifying the package /var/tmp/portupgrade8cD9grYr/firefox.tbz
---> Saved as /usr/ports/packages/All/firefox-9.0.1,1.tbz
---> Found a package of 'www/firefox': /usr/ports/packages/All/firefox-9.0.1,1.tbz (firefox-9.0.1,1)
---> Located a package version 9.0.1,1 (/usr/ports/packages/All/firefox-9.0.1,1.tbz)
** Ignoring the package, which is the same version as is installed (9.0.1,1)
** No package available: www/firefox
** Listing the failed packages (-:ignored / *:skipped / !:failed)
! www/firefox (firefox-9.0.1,1) (package not found)

How-To-Repeat: as above - as of today there is no firefox package available yet.