There have been a number of situations that users have been experiencing with the system seeing the latest package updates. While there might still be a bit of a delay for the mirrors to synchronize with the main ftp server, all of the package sets and mirrors should be available and ready for use.
If you are still experiencing issues with package updates not being available, I have a couple steps for you to take:
1) Open a terminal and switch to the root user (su)
2) Edit the file "/usr/local/etc/pkg.conf"
3) Make sure the "packagesite:" variable is NOT pointing to getmirror.pcbsd.org
, it should be pointing instead to something like: http://ftp.pcbsd.org/pub/mirror/packages/9.1-RELEASE/[i386 or amd64]
with the "ftp.pcbsd.org/pub/mirror/" part adjusted to point to your local mirror.
The "HTTP_MIRROR" variable can be completely removed if you still have it as well.
Once this is done and the file has been saved, the update manager should be able to pick up the available package updates and work properly after that.