Phone keeps rining and vibrating on its own. WTF?

Ok so today morning my phone rins(I set the alarm for 6am, 6:10am and 6:15am). Ok so I turned off the alarm, damn phone kept ringing!

So I move the button to vibrate. The phone kept vibrating every few minutes on its own! I have no missed calls, vmails or texts.

It still keeps doing it right now! I reset it by removing the battery, pressing the button behind battery cover and still does it!

This is my second Treo, first one swapped out after 29 days(when making a call could not hear, nor could other person hear me).

Now this one is doing this! Will the Sprint store just swap it for me?

Anyone know what this could be?

Thanks!