Weird Behavior in Designer Client?

Anyone else have this? When I am in the Designer client (8.0.2) and am working on some Lotusscript, say in an action or something, if I get an email in my Notes client, the focus in Designer is taken from the action and puts me up in the "Window Title". I don't have popup notification (because it's too distracting!), just the icon in the system tray. This behavior drives me a little nutty when I'm in the middle of coding something and it loses focus. I have enough trouble keeping focus!