I have the constant rolling wants on lots with teens and mobile phones. If someone uses the phone while their there it seems to set it off. I'm not entirely sure whether the rolling stops when the mobile phone call ends. I'm still monitoring this. I thought it might be due to a clash of hacks; I have the inTeeminator installed as well.
Funny you should mention this--I had the Wants rerolling every hour in houses with the cell phones, and that was before I had any hacks at all. The hourly rolling goes away eventually, but I haven't paid attention to the pattern.