Phantom notifications of Galaxy Note driving me nuts I just got a Samsung Galaxy Note a few weeks ago and really like the phone. The problem is that I get notifications for non-events or phantom events day and night: the phone makes the notification sound but there are no new messages, lost calls, or anything; the notification bar is empty and there's nothing showing on the screen. 

I've changed the alert sound and the funny thing is that the one that keeps on buggin me is the default whistling sound that came preloaded with the phone.

Updated to ICS 4.0 and it is still happening. (I'm still running the Gingerbread stock build.) 

Any ideas beyond resetting to factory settings?
Mine was the Yahoo app. It was driving me mad. Nothing in the status bar, just a two-tone ding-ding. All the notification boxes in the app were unticked but it was still dinging.

Go to the app, - Options - Account settings - Notification Settings - Choose sound. If you touch the "Yahoo! Default" I bet you hear the two-tone ding. Select "No sound". I haven't heard it since it did that. If that doesn't fix it, the app is coming off the phone. Yahoo need to get real. That is not OK.