5.0.1 - pkg_add doesn't

[Ingolf Steinbach <ingolf.steinbach%googlemail.com@localhost>]

What's happening here? (nearly(*) fresh NetBSD/i386 5.0.1):

  newbox# export
PKG_PATH="ftp://ftp3.de.netbsd.org/pub/pkgsrc/packages/NetBSD/i386/5.0/All";
  newbox# pkg_add -v hal
  pkg_add: Warning: package `hal-0.5.11nb23' was built for a platform:
  pkg_add: NetBSD/i386 5.0 (pkg) vs. NetBSD/i386 5.0.1 (this host)
  newbox# pkg_info | grep -i hal
  newbox#

Neither is there a hal package installed after pkg_add returns nor
does pkg_add emit any indication of an error or any "verbose" output
(besides the warning wrt 5.0/5.0.1 which I understand and which is
*not* the topic). pkg_add just returns after considerable(!) amount of
time -- apparently without doing anything.

(*) besides: three other packages installed correctly: tcsh, screen, and dbus.

Hints welcome.
Ingolf