Please try to give a more detailed info on your setup like Rules ect . Because i use DNAT / SNAT / with FTP and ip_conntrack_ftp & ip_nat_ftp allot with IPTables and have never found / seen those messages ? maybee thats cuz i dont log much anymore .. i just drop / reject a Shitload .. .lol let me know how ya go ... cyas, Hard__warE