A few weeks ago, a new notification item appeared on my tray. It's worded in a way similar to normal update notifications, but it's not one of them, and it makes reference to software I haven't installed. See this image:
The screen grab shows two standard update notifications: "X applications updated" and "X updates need approval". However, there's also a different one that reads "1 new update - Touch to download Twitter". Not only this one is different, the really strange thing is that I DON'T have Twitter installed, so there should be anything to update.
Aside: I use a Twitter client, but it's called Tweet Lanes and it normally upgrades through the normal routes. This doesn't seem related.
My tablet is a 2011 Samsung Galaxy 10.1, running Android 4.0.4. Maybe the notification is generated by the OEM software provided by Samsung?
Is there a way to tell which programs are showing which notifications?