I am wondering if this is what you mean…http://forum.avast.com/index.php?topic=87489.msg702669#msg702669
If this is it don’t worry it’s a one time thing.
The pop-up that happens the most is a definition up-date.
If you could do as spg Scott suggested please post a screen shot. That way we know what we are dealing with. I am not one to jump to conclusions and neither is spg Scott. 