freebsd-update doesn't seem to update to Latest

[Sebastian Setzer]

Hi,
I did a freebsd-update to 7.1-RELEASE as described in the release notes.
After that, I installed Openoffice (with pkg_add) and got several warnings like this one:
pkg_add: warning: package 'gnome-vfs-2.22.0_2' requires 'atk-1.22.0_1', but 'atk-1.20.0' is installed

Now I did
# pkg_add -r atk
pkg_add: package 'atk-1.22.0_1' or its older version already installed

so with pkg_add -r I get newer packages than I got with freebsd-update. Why?