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Migrated to http://ubuntuincident.wordpress.com/2010/09/30/update-several-machines/.
Problem
I want to upgrade two machines to the newest Ubuntu but I don't want to download the packages twice. Any idea?
Solution
Do the upgrade on the first machine, then copy the .deb packages from /var/cache/apt/archives
to the other machine.
This tip was found at http://hup.hu/cikkek/20090330/frissitettem_intrepid_ibex-rol_jaunty_jackalope-ra .