[Samba] log files created for both the hostname and the IP address?

[Chris]

At a new account where they run Samba 3.0.14a on a Debian server I'm 
seeing log files being created for both the hostname and the IP 
address. The log files, however, are not identical. But the timestamps 
are close.

None of my installations have this quirk. If the hostname is resolvable 
the log is made using it, if not resolvable then the log is made with 
the IP address but not both.

Any ideas on what could cause this?

Thanks.

Chris