Job queue daemon. Should be running at all times. This is usually started from the init scripts.
The log files are a good place to check to investigate when attempting to isolate issues related to exports.
[Thu Jul 19 02:58:47 2007]  Can't connect to MySQL server on 'sql2' (111) at /usr/share/perl5/FS/part_export/sqlradius.pm line
The log file should be in /usr/local/etc/freeside/queuelog.secretkey where secretkey is the first line from the mapsecrets file.
The normal secrets file in /usr/local/etc/freeside/secrets (or any alternate file from mapsecrets) will be used to connect to the database.