Mine vibrates pretty strongly.
It's pretty weak compared to my OG droid... But everything else is better. No way in hell I'm leaving these data speeds, and this 4.3 inch screen. Now I've played with it for 2 full days. I turned on my OG droid and got nauseous.
I am disappointed in the vibration, too. It's barely noticeable, I missed 2 calls and my phone was next to me on the desk. I'm going to try to find an app that will help with this, give me more of a visual notification and more sound level options.