There are lots of threads on this.
It's a BlackBerry App World notification. You have an app that needs updated. You should be able to find the notification in your Messages folder to clear the notification.
The difference between stupidity and genius is that genius has its limits.
When you take things for granted, the things you are granted, get taken.
Even a mosquito doesn't get a pat on the back until it starts to work.
Too many people miss the silver lining because they're expecting gold.
[BES 5.0.3 / GroupWise 2012 HP2]