How to locate the lux.log file for diagnosing LiveUpdate issues in SMSMSE
Depending on the version of the product you have installed the location of this file has changed.
7.9.1 (And Older)
C:\Program Files\Symantec\SMSMSE\<\Server\definitions\AntiVirus\Logs
7.10 (And Newer)
C:\Program Files\Symantec\SMSMSE\7.10\Server\definitions\Master\Stargate\logs
This file will be requested by Broadcom Support when investigating any LiveUpdate issues.