The latest version of PacketFence is 1.8.3, which as been released on 2009-06-05. This version is considered stable and can be used in production environments.
Source
packetfence-1.8.3.tar.gz
MD5 sum: af11d6d7413a4053f139108d3c0fa7db
RHEL5/CentOS5 RPM
packetfence-1.8.3-1.el5.noarch.rpm
MD5 sum: 045ffa1d96214c7a2499521ac89eda7c
packetfence-remote-snort-sensor-1.8.3-1.el5.noarch.rpm
MD5 sum: 37ac4ccfcc0b9ed6adfb75ea5314691d
