My Ipad2 is on 5.1.1 and just now quit sending notifications from email and games. The only one that works is facebook. I have gone to settings-general-sounds and everything is on. I have gone to settings-notifications and have Manually marked. Mail and games are listed under In Notification Center. I have also gone to settings-general-mail and Fetch New Data is under PUSH. On the lock screen some games will notify me but no sound although under apps sound is on. Am I missing something? Seems strange it worked fine last week and now nothing especially since I didn't adjust anything. BAFFLED!! Thanks in advance!