I installed jPFChat, a phpFreeChat Component for Joomla. When I tried to run it, I received this error message:
LOCK_EX feature is not usable on your filesystem. Please do not use the 'file' container (try the 'mysql' container) or swith to another filesystem type.I realized that the cause was because I am running my web site on an NFS partition.
I decided to try configuring jPFChat for MySQL.
Using MySQLAdmin, I created a MySQL database for jPFChat.
In this file: ./components/com_jpfchat/pfc/src/pfcglobalconfig.class.php
I changed container_type from "File" to "Mysql".
In this file: ./components/com_jpfchat/pfc/src/containers/mysql.class.php
I entered the hostname, database, username, and password for my MySQL database. I was required to enter this data at two different locations in the file.
Everything seems to be working fine!