I have a SBS 2003 Server with SEP installed (MR2). The LiveUpdate function appears to work and the home page of the Endpoint Protection Manager shows that the info is up to date.
If I look at the "Show LiveUpdate Downloads" screen, it is empty and says "No LiveUpdate Content has been downloaded".
The folder "\Documents and Settings\All Users\Application Data\Symantec\LiveUpdate\Downloads" has lots of folders, but "\Program Files\Symantec\Endpoint Protection Manager\Inetpub\content" is empty except for an empty "ContentInfo.txt" file.
I have reinstalled both manager and client, I have searched this forum and Google but have found nothing that helps!
Other details, such as policy updates, enable/disable features, etc all work from the server to the client. It appears to be just the AntiVirus/etc definitions that are not being updated - and it "seems" like they are not being put in the right place by LiveUpdate or something else.