Howdy Nation,
Since starting to use Casper Suite about a month ago I have been hacking away at a fairly complete how-to for configuring Ubuntu Server 12.04 as a smb/https distribution point. Check it out and let me know if I missed anything, hope it's a good resource for everybody.
http://74bit.com/gossip/2012/09/casper-suite-distribution-point-on-linux/
Thanks and Happy iPhone Day!