Transmission Gear Slipping problems of the 2001 Jeep Laredo

My 2001 Jeep accelerates when stopping and has a slow take off when accelerating. I stopped at a traffic light when applying the brakes the Jeep accelerated. I had to again apply the brakes. I never know when it is going to stop. The transmission light has come on and a gas cap was replaced when this first happened but now the accelerations have started again. I am afraid to drive the car close to any other car because I don't know if the Jeep will just take off. Also, the shift gear slips easily I have to be careful about touching the shift while driving. Has any other complaints been filed concerning the accelerations when stopping in the 2001 Jeep grand cherokees?.