Software problems of the 2005 Toyota Camry

2005 Toyota Camry xle--beginning in March 2007 my Camry began to accelerate from a stopped position. My Camry would take off at high speeds from a complete stop and applying the gas pedal. This occurred several times. I took my car to my dealer bill page Toyota in falls church, va. The first time the acceleration occurred was after 2 years and in March 2007. I was on constitution avenue, right lane in DC--which either turns right or goes straight. Constitution avenue is 3 or 4 lanes each east and westbound--I was heading eastbound. When the light turned green, the car in front of me turned right, thank goodness because as I took my foot off the brake and unto the gas, my car shot forward so fast my brakes wouldn't stop my car. Upon slamming on the brakes which were shuddering so badly, I thought my car was never going to stop and hit the next car (rush hour). I stopped short of hitting that car. I was so scared. My service manager said couldn't reproduce and that there was nothing wrong with my brakes or car. He told me that the shuttering is normal when I slam on my brakes--a safety feature to stop the car. Computer said nothing wrong. Had the acceleration problem at least 3 more times. I was at a parking meter, 1st space. Got into my car, turned on the key, released my emergency brake, and took my foot off the brake and unto the gas. I wanted to make a right turn. There were 2 people on the sidewalk, and thankfully they did not walk in front of my car--I would have run over them. My car took off so fast from a stopped position that I had a hard time stopping my car. I immediately took my 2005 Camry to the dealer. Again service manager told me computer says there is nothing wrong with my car--think computer/software glitch. Last week Toyota corp said won't fix b/c not on recall and only intermittent, which is the problem. Told me I own the car, it's out of warranty won't pay to fix. Help! when driving it's like russian roulette!.