upgrading ports without recompiling

[Ishmael F.E.]

Hi there
.
¿How can I upgrade my ports without having to recompile everything?
.
I allready did
# freebsd-update -r 7.2-RELEASE upgrade install
# reboot
# freebsd-update install
.
But it didn'nt upgrade the ports, so I tryed
# portupgrade -af
but it tried to compile everything
.
I also tried
# portsnap fetch
# portsnap extract
# portsnap fetch update
# portupgrade -a --batch -u -P
.
but it also tried to compile everything
.
so, ¿how can I upgrade the ports?
unfortunatley I don't have time to compile my 64bit system
.
.
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