iptables Applying firewall rules

iptables Applying firewall rules

I have two servers, when I restart iptables on the first server it does
"Applying firewall rules" but on the second does'nt. What's the problem
with the second server ?
First server:
[root@test ~]# service iptables restart
iptables: Flushing firewall rules: [ OK ]
iptables: Setting chains to policy ACCEPT: filter [ OK ]
iptables: Unloading modules: [ OK ]
iptables: Applying firewall rules: [ OK ]
Second server:
[root@test ~]# service iptables restart
iptables: Flushing firewall rules: [ OK ]
iptables: Setting chains to policy ACCEPT: nat [ OK ]
iptables: Unloading modules: [ OK ]
Thank you.