ACLs changing for no apparent reason. (Samba 2.2.4, XFS on 2.4.17).

["Ken D'Ambrosio" <kend@xxxxxxxxxxxx>]

I'm not sure if this is a Samba issue or an XFS issue, but for various
users, on files that are commonly shared by others, the ACLs change in
weird ways, with no action (other than saving the file) on the user's
part:

- One user, upon saving the file, has the ACL (but not the "stock" Unix
  permissions) change to no permissions at all for group.
- Another two users, upon saving, have the Unix permissions change to 
  the equiv. of "chmod o-w".

Any idea what might cause this to be happening, or where I should look
to find more info?  It's entirely reproducible, and, right now, I have a
script running that "chmods" the files every couple seconds -- hack in
the extreme.  Unless I figure something out, I'll probably start by
disabling ACLs in Samba, and see if the problem goes away.

Thanks!

Ken D'Ambrosio
Sr. SysAdmin,
Xanoptix, Inc.