whats the smoke coming from?

another new symptom is that the car is lagging on take off when i put it in gear...drive or reverse. in other words, the car needs a little feathering of the throttle pedal to get going. maybe a bad axel? i don't see any rubbing from my tires in the wheel well. i have stock 15" chrysler rallyes on the front and back. no drips coming from the struts either. how can i tell if my axel bearing is leaking/bad? thanks