portupgrade problem after upgrading to 9.1-(PRE)RELEASE

[CeDeROM]

Hello :-)

I was using portupgrade/portinstall -PP on 9.1-RC3 with no problem.
After freebsd-update -r 9.1-RELEASE I cannot install any port from
packages. Should I additionally configure my system somehow? Where did
the portupgrade took the packages from last time / before upgrade?

Any hints appreciated :-)
Tomek

-- 
CeDeROM, SQ7MHZ, http://www.tomek.cedro.info