encountering an erroe when turning on the firewall

Hi,

Can someone help me find a solution for my concern below?

Getting and error message when turning on firewall [Error applying firewall rules (exit code 6): iptables v1.4.10
iptables: Index of insertion too big]

thank you in advance.

Regards,
RoieE

This is identical post to
http://forum.avast.com/index.php?topic=123355.0