Firstly, I've tried all the very basics things like a factory reset and uninstall, reinstalling. I've checked under accounts and made sure that the app is synchronized. It's not a sound issue either. My Twitter application just does not notify me of anything new, AT ALL. Mentions, follows, whatever, I just do not get notified. All my other apps, social networking or otherwise are fine. I try going into the account settings on the Twitter app itself and it will not let me change anything. The settings are all 'greyed out'. [Image attached below.] Any and all help appreciated as this is most infuriating and seems a stupid problem. I've looked all over the web to no avail so hopefully someone here is wiser.