gnome upgrade

[xinyou yan]

Freebsd8.1 gnome2.30.0
I want to upgrade the gnome  and do it like the  /usr/ports/UPDATING


# pkgdb -fF
# pkg_deinstall -fO gtkmm-2.20\* gtk-2.20\*
# portupgrade -aOW

after it finish ,gnome doesn't become 2.32

I als0 want to know .  Under  gnome   System>Administration>Software Update
Every time  it  failed and show

"Could not get package details
No results were returned "

When i use gnome as root
it show
"Have not update command "