[Samba] Samba write permissions being set incorrectly on FreeBSD 7.2

[Mark Lokowich]

I've found that write permissions get set after updating (copy over) 
read-only files from Windows XP to my Samba 3.3.3 mount on FreeBSD 7.2. 
  I have the "map archive = no" option.  If I change this option to 
"yes" then the write bits are cleared, as expected for either setting in 
this scenario.  Why are the write bits getting mapped per this setting?
fwiw: I've never seen this on Linux version of Samba.  Could it be ext3 
vs. ufs?

Thanks,
Mark Lokowich
Compellent Technologies