binary update problem with portupgrade

[Matej Ornest]

Hi,

I'm trying to upgrade my FreeBSD-5.3-Release installation to the
latest version with portupgrade, but I don't want to compile all those
megamonsters like KDE, so I'd like to use packages for upgrade. But
portupgrade cannot find appropriate packages for upgrade. It looks for
them on ftp://ftp.freebsd.org/pub/freebsd/ports/i386/packages-5.3-release/All/
which is wrong...
I made cvsup before and it finished succesfully and pkg_version gives
right results.
I suppose it's just some config problem but I can't find where & how
to point portupgrade to the right place to pick required packages. My
config is as follows:
corvette# uname -a
FreeBSD corvette 5.3-RELEASE FreeBSD 5.3-RELEASE #0: Thu Mar 10
11:42:05 CET 2005    
matthes at corvette:/usr/src/sys/i386/compile/CORVETTE  i386

corvette# cat /usr/local/etc/pkgtools.conf
OS_RELEASE = "5-STABLE"
OS_MAJOR = "5"
OS_BRANCH = "STABLE"
ENV['PACKAGEROOT'] = 'ftp://ftp.FreeBSD.org'
ENV['PORTSDIR'] ||= '/usr/ports'
ENV['PACKAGES'] ||= ENV['PORTSDIR'] + '/packages'
ENV['PKG_PATH'] ||= ENV['PACKAGES'] + '/All'
OS_PLATFORM = "i386"
OS_PKGBRANCH = "5-stable"
SANITY_CHECK = true
IGNORE_CATEGORIES = [
       'chinese',
       'french',
       'german',
       'hebrew',
       'japanese',
       'korean',
       'russian',
       'ukrainian',
       'vietnamese',
     ]
USE_PKGS = [
    'x11/*',
    '*openoffice*'
  ]

  USE_PKGS_ONLY = [
    'kde*'
  ]

(others are as default)

Can anybody help me out?

Thanx for any advice
Matthes