Issues with Lumia 900 capacitive buttons

I just got my Lumia 900 and am having a issue with the capacitive buttons and I was wondering if anyone else had seen this issue and how they fixed it.

Sometimes when I press the home button it will open voice control instead of taking me back to the start screen or when I press the back button it opens multitasking instead of going back. I am of course only making a tap not holding down the button.

Should I just restore the phone or tell AT&T to replace it? Has anyone else experience this?