We recently purchased our 2010 XLE 6cyl Camry. It has a clunking sound when accelerating from a complete stop. Sounds like there is a watermelon in the trunk rolling back. The sound is intermittent. I have taken it to the repair shop and they have heard the problem but cannot tell me what it is. I was told a Toyota rep will be looking at it next time he is in town. Car has less than 900 miles on it and has had this problem since we purchased it. Really wish we had noticed it on the test drive. Disappointed.