I guess it depends on the system. I use Norton, and I have trouble whenever my computer goes into hibernation or some other "zoned out" state, like screensaver. It kind of just stops in the middle of what it's doing, and when you turn the screen back on, it continues.

of course, I have issues if I run anything other than solitaire while it's doing it's thing. That's why I have it run while I'm asleep on Fridays or so.

If you're concerned, you may want to try that.

Hope that helps!

i have my anti virus and ad-aware programs set to run on auto.my screen saver is on and works fine.to see if its working,the next day open your anti virus and check history and should show test results and if so then you have no issues and if not then you know will have to do manually