A recent update to AVG caused my once easy connection to the server to cause all manner of annoyances. So I got rid of it. I also now have the habit of running everything in Vista as an administrator, even when logged on an administrator account.
I have no idea of how anything works inside computers. To analogise: just as I find the digestive process in humans interesting, I still will not perform surgery on myslef to see more graphically what my intestines look like up close.