Post Blackra1n Jailbreak Q - 3GS w/ 3.1.2. Vibrating & Dinging

[stealthall]

New to the j/b scene...and have spent the last two days tweaking and getting all the fixes in place...the last thing that I cannot figure out...is about every 2-5 minutes my iphone will vibrate (if in that mode) or vibrate and then ding. There is not an email or SMS or anything incoming...

Can someone PLEASE tell what this warning/notification/etc means, it is driving me crazy!

Thanks!