You are not only getting the error because of the architecture mismatch but because the release no longer matches the contents of /etc/sysconfig/systemid This (most likely, happened to me as well) is due to updating the sl-release RPM
For now it's quickest to simply reregister using /usr/sbin/rhnreg_ks --force --serverUrl=http://$my.spacewalk.server$/XMLRPC --activationkey=$mykey$ and things will work again, in future don't apply the sl-release updates to your systems. (you should not even import updates of those into your spacewalk channels ... are you sure you are getting updates from the right repository directory?) -- Jan-Albert van Ree Jan-Albert van Ree Linux System Administrator MSuG MARIN Support Group E mailto:j.a.v....@marin.nl T +31 317 49 35 48 MARIN 2, Haagsteeg, P.O. Box 28, 6700 AA Wageningen, The Netherlands T +31 317 49 39 11, F , I www.marin.nl ________________________________________ From: spacewalk-list-boun...@redhat.com [spacewalk-list-boun...@redhat.com] on behalf of Andreas Kelle-Emden [kelle-em...@rz.rwth-aachen.de] Sent: Friday, September 28, 2012 11:45 To: spacewalk-list@redhat.com Subject: Re: [Spacewalk-list] "Architecture" problem with SL 6.3 PS: uname -a still gives me "x86_64" like it should do... Where does rhn_check get the wrong information from? _______________________________________________ Spacewalk-list mailing list Spacewalk-list@redhat.com https://www.redhat.com/mailman/listinfo/spacewalk-list