if i restart syslog-ng (witch i need to to rotate the logs) it seems that the iptables firewall hits don't get logged anymore.., even if i stop and then restart it it still doesn't logs.. but reboot is fine. it's a strange problem but maybe anyone has had the same situation, tanks.

PS: i'm compiling 1.5.10 right now to upgrade the version i have witch is 1.4.13.