I don't know if this a common thing or not. I exchanged my Blackberry today for the Titanium one and I had to change my phone number. The number was coming up as someone else. Now I have a new number a 3 times in the last few hours I had 3 text messages from unknown people inviting me out tonight. One person text me about no cover charge at a club LOL. Also, as I write this I had a unknown phone call from someone. Is this normal with the Blackberry?