The Computer is added the Norton Antivirus 2006.
It's request to update , and I run the LiveUpdate. It's appear the 13files to update.
So I tick all the 13 file and start update. But after updating 10 files , It 's Still need to update over 20000kb , suddenly "the server connection fail or connection is disturbed , update again " dialog is appear, and stop the updating, So I try the 2nd round. This time it can get the 4files and then the dialog appear and finish it. Every I try to update, it happens again and I can't get the complete update.
It's still show me software is out of date and ask me to update.

Try to re-install or use another antivirus software