I'm showing the virus definitions were last updated over 5 hours ago (7:17:22 PM CST, 8/21/13). I ran Live Update manually 15 minutes ago (12:00:54 AM CST, 8/22/13), and the only update was to the 2012 Reputation Revocation List.
Do I have a problem here, or are others also having a problem with Live Updates? I'm using NAV 20.4.0.40.