Wirelessly posted (iPhone 4S: Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3)
Do you mean the Notification Center or the lock screen? You have a choice of the alert style in Notifications under each app, check your apps and see that they're alerting you the way you desire.