You may be right.. every since I told my AV "nod32" to stop scanning SAS.. everything is fine... I have no way of knowing if SAS scans not only the file the same time nod scans it but also if it scans "nod" while it scans that file....
if so, it seems it would free up even more to have it ignore nod32.
But like you say, that may not be necessary.