[swerdna]

I don't have the time or the inclination to go into the zone thing too deeply. But as far as I've searched in Goolge they appear to be files generated by microsoft code for security enhancement purposes. They are invisible in windows -- but they are there nevertheless. They are there also in Linux and the fuss appears to be around because they are visible in Linux. That seems to be the only difference on a cursory look. I'm really very happy to be corrected on this because I didn't look hard. But prima facie they should appear in a Samba server if the server is functioning correctly.

If you want to filter out the files mandatorily created by microsoft, probably good idea to use the veto method recommended by bmynars.