Comment # 9 on bug 1073141 from Michael Andres

YAST is downloading
http://download.opensuse.org/ports/ppc/tumbleweed/repo/oss/suse/setup/descr/packages.gz,
but the server (or proxy, or mirror) seems to deliver old data.

- Did you manually download  _on_the_machine_  that shows the error? Would be
good to know which content `curl -v
http://download.opensuse.org/.../packages.gz` delivers on this machine.
(switching to the text console before canceling YAST)

- We're sure there's no fake download.opensuse.org entry in /etc/hosts which
redirects to some dummy server? 

- There's no (transparent) proxy in use which could deliver old data?

Please set 'ZYPP_MEDIA_CURL_DEBUG=2' in the environment before starting YAST.
The yast logs will then contain more information about he download.