Tutoriel N° 1cc
Old Pop-up Style Alert Notifications Back in iOS 5
You can enable the old pop-up alert style again, but you have to do it on a per-application basis with iOS 5:
Tap onto “Settings” and go to “Notifications”
Tap on an application that you want to have the old alert style
Under “Alert Style” select “Alerts” rather than the default, ‘Banner’
In the same settings screen, you can also choose to show or not show items at the Lock Screen and Notification Center.