Debian :: Debian Lenny Iptables Does Not Logs

I have problem with loging, actually iptables logs a data but it seems that for some reasons does not writes in a log file:

Code:
iptables -L -v
Chain INPUT (policy ACCEPT 406 packets, 124K bytes)
pkts bytes target prot opt in out source destination
0 0 ACCEPT tcp -- any any xxxxxxxxxxx anywhere tcp dpt:xxxx

[Code]....

i checked /var/log/message and /var/log/syslog nothing is here related to iptables. then i create separate file for Iptables by adding this: kern.warning /var/log/iptables.log in my rsyslog.conf it does create iptables.log file inside /var/ but its still empty