Rename the original lux.logging.conf in /Library/Application Support/Symantec/Silo/NFM/LiveUpdate/Conf to lux.logging.conf.old.
Copy the new lux.logging.conf file from the desktop to /Library/Application Support/Symantec/Silo/NFM/LiveUpdate/Conf. Debug logging will now be enabled.
To disable debug logging, delete the new lux.logging.conf file and rename lux.logging.conf.old to lux.logging.conf.
Note: lux.logging.conf parameters are case sensitive.
When enabled, seperate devlux_####.log files will be generated in the same location as other LiveUpdate logs, each suffixed with the PID of the LiveUpdate process for that session.
These logs are best gathered by using the GatherSymantecInfo tool, which will generate a report including other useful troubleshooting information which can be provided to Symantec if a technical support case is opened.