Latest questions about "mcafee antivirus plus 2013"

I regularly update my software, still it notifies me with a message that my system is not secure. Clicking on check for updates, removes this problem but after 1 hour it still notifies me again.

My real-time scanning option shows that it's turned on, but when I go to virus and spyware protection it says "Buffer overflow checking is off" and "Script checking is off".