was out running around with the wife today. had the a/c on for a bit. stop at a store, turn car off, then turn fan to off. when we get back in the car and start driving, fan is on off postition but is still blowing air. if i turned the fan on it would blow harder, but when i turned back to off, would still blow. it was blowing out the front vents at about the level you would expect from being on level 2. after about 10-15 min it finally stops blowing. anyone ever had a problem like this?