Brian - Thats where it gets installed.
Eg: C:\ProgramData\Symantec\Symantec Endpoint Protection\12.1.4013.4013.105\Data\Definitions\VirusDefs
20141216.032 - Definition Folder Installed on the machine
BinHub - Where it gets processed
newdefs-trigger - Triggers LU
TextHub - Blank
But there is no folder where it gets downloaded. When you click Live update button these folders will not have download content.
Eg: When it is live update dowload even at 75% these folders are blank.
Only after 100% download during processing - Binhub gets the contents where it initiates purging process with existing definitions.
So my question is where does that 100% download goes on???