[Samba] Samba sending broadcasts on wrong devices.

[1st-angel]

hi,

first of all i want to thank all the developers of Samba for that wonder ful
piece of software.
Now to my problem.
I run a samba server (smbd --version: Version 3.0.22) on a server that serves
two networks (eth0:192.168.0.254/24 and br0:192.168.1.254/24).
br0 is a WLAN interface with WDS support but i don't think that should be a problem.
I got it configured with
--snip--
socket address = 192.168.0.254 192.168.1.254
interfaces = 127.0.0.1 192.168.0.254/24 192.168.1.254/24
bind interfaces only = yes
--snap--
But every few minutes i get a message from my Firewall that tells me:
iptfw:FINAL:OUT:IN= OUT=eth0 SRC=192.168.1.254 DST=192.168.0.255 LEN=78 TOS=0x00
PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=137 DPT=137 LEN=58

Can someone tell me why samba is sending a broadcast for 192.168.0.255 through
the interface of 192.168.0.255 but with the SRC address of 192.168.1.254?

Full config file can be found under: https://angel.homelinux.org/smb.conf

Thanks in advance

Angel

p.s.
sorry for my bad English but i am not a native English speaker (German)