Not sure exactly what you are saying. Are you saying that given two popups or alerts that are displaying, when the first popup is closed, the main app is no longer blurred (as is normal when "modal" popups/alerts are displayed), but that instead the main app is clearly displayed?
So you expect the main app to be blurred until the second popup/alert is closed?
Perhaps you need to ensure both are set to be "modal"?
Not sure if I am on-track, please forgive me if this is not the case.
If this post answers your question or helps, please mark it as such.
Greg Lafrance - Flex 2 and 3 ACE certified
Flex Training and Support Services
Both the popup windows are launched as modal dialog.