The following line:
host file dns wins
in /etc/nsswitch.conf results in a segfault.
With win in nsswitch configuration and a query for a none exsisting host any program like ping or so will resalt in a segfault. Without wins evryrhing is fine.
In smb.conf I have only the folowing line regarding wins:
wins server = my.lokal.wins.server
This setup was working in 3.0.21c
*** This bug has been marked as a duplicate of 3937 ***