No contradiction here, just the reminder to keep Antivirus up to date. They typically have an update available on Wednesdays, and more often if there is a threat of some sort.
The last time I tried to use the update, it would load but wouldn't install the update, gave me an error message. I went to the Symantec site and downloaded it manually from there and it loaded fine, and has worked great ever since. Norton is a very accomodating company, and it's worthwhile visiting their site occasionally and browsing.