Why the FB app doesnt give notification when somebody message me or if anybody liked my status??????u can only know it when you entered d FB app.........
Are you sure you have notifications turned on in the app settings and a live tile pinned? Sounds to me like something is being overlooked, 30 live app can be running at once so are you under that?
The integrated fb chat works fine for me. Any message I send or receive will show up in the app and website. But if i have FB app notifications on, i get them.