Errors Copying Files from Mac to Ubuntu Samba Share

So I get a shiny new printer at the bargain basement price of $70 so I can do PDF scans for my business.  It works fine and then when I try to copy the PDF’s from my Apple Mac Mini to my Ubuntu server running the latest Samba I get the oh-so-helpful Windowsique error of:

The operation can’t be completed because you don’t have permission to  access some of the items.

Gee, that helps.  So I go through the usual process of checking the file permissions, samba server settings, directory permissions and so on.  Of course everything looks fine.  After playing Google Bingo I find a reference at http://www.macosxhints.com/article.php?story=20100405023255445 that I need the following setting in my smb.conf.

unix extensions = no

Apparently the Mac is adding some extended attributes to the files during the copy and Samba didn’t like that.  After restarting samba and disconnect/reconnect the mac shares I’m good to go.