update errors

After At start-up, I notice that the Security Centre icon on the system tray
displays a warning: You computer might be at risk. The firewall is not
turned on. for a while. I opened the Security Centre and checked if the
firewall is not turned on. It does turn on. Can someone advise me why it
happens and how to resolve it.
WIN XP SP3 fresh copy, only McAFEE antivirus

If you must make identical posts to multiple newsgroups, please cross-post
one (1) message to all of them. Thank you.

Multiposting vs Crossposting:
http://www.blakjak.demon.co.uk/mul_crss.htm

See replies to your other posts (one of which was crossposted to all 3
newsgroups where you multiposted).

ILIAS wrote:
> After At start-up, I notice that the Security Centre icon on the system
> tray
> displays a warning: You computer might be at risk. The firewall is not
> turned on. for a while. I opened the Security Centre and checked if the
> firewall is not turned on. It does turn on. Can someone advise me why it
> happens and how to resolve it.
> WIN XP SP3 fresh copy, only McAFEE antivirus