For no apparent reason neither the automatic Norton update or a user-initiated update is working.  UP to 15 Feb it was working  - since then it isn't. I've not changed anything on the computer.  On initiating update I now simply get the message 'Updating error There was an error performing the update'.  There seems no way to get any further information about what error or why.  My subscription still has 6-8 months to run.  All other aspects of Norton (and of my MacBook) are working normally.  Can anyone explain why the LiveUpdate function is not working?  I'm using Internet Sectority for Mac with Mac OS Leopard.  Any suggestions welcome.  Thanks.