Hi all,
I think that http://slackintosh.workaround.ch/pub/slackintosh/current/slackintosh/a/bin-11.0-i486-3.tgz must be moved in http://slackintosh.workaround.ch/pub/slackintosh/current/slackintosh/a/bin-11.0-powerpc-3.tgz it's simply a typo in the name, the package is ok.
Ciao -- gioco