I got two emails from Blackberry App World today informing me that two applications have available upgrades. I clicked the first email which took me in to the App World where I then continued to upgrade both apps. I did the required reboots but now the messages are gone from my mail items and I've got one notification that there's an application in the app world that needs an upgrade, even though they've both been upgraded.
I had that the other day telling me to upgrade App World, which I in turn did, but the icon was still there. I ended up having to do delete App World completely and re-install. I hope they fix that soon!