Version : iptables-1.2.8-8.72.3

The new iptables service tries to unload the iptables modules on stop.
The problem is the connection tacking module won't unload if there is a
connection active. (A workaround is to do a service network restart)

As a result :
- service iptables restart will hang most of the times is conntrack is used
- software shutdown will fail too since the iptable service just hangs.

I've seen people hard-reset boxes just to restore iptables after a iptable
restart hung on them.