I appear to be receiving duplicate Twitter notifications on the 4.1.2 version, also had the issue on 4.1.1. The thing is when someone sends me a direct message (DM) or tweet I seem to get the status bar notification for it twice, it doesn't occur every time but more often than not. The Email notification is received normally. I have all the correct settings ticked to receive these notifications, so I am unsure what the problem might be. I have looked through the reviews on Google Store but none mention the duplicate issue. The OS is Android 2.3.6