If you choose to use third-party security utilities such as anti-virus and anti-spyware programs, these programs may disable particular components in the Security Center in order to function. Vista will constantly open pop-up alerts informing you that these components have been disabled, as well as let you know if any updates are available. To avoid getting slowed down by these pop ups, you can disable the notifications. Here’s how:
Right click on the tiny red shield icon in the bottom.
Select Open Security Center from the context menu.
Click on the link that reads: Change the way Security Center alerts me.
Select the third option: Don't notify me and don't display the icon.

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