[Pkg-samba-maint] Bug#553904: Bug#553904: samba: Lost accounts on upgrade

[peter green]

 >So, people who use our default configuration will not be harmed by
 >this default setting change. Only people who have *no* setting ofr
 >"passdb backend" will suffer from the same problem you had.
Which afaict means anyway who initially installed and configured samba 
under woody, did not explicitly choose a backend and kept thier 
configuration through upgrades.