Hmmm... CV joint? I've had the noise in my 05 wagon for the past couple years. A couple shops have looked at it but don't see any issues. I thought it was just a problem with my car until I saw this thread a couple days ago. My noise sounds a lot like a CV joint going out on a front wheel drive car only it comes from the right rear on my wagon. Wonder if it's a CV joint waiting for an opportunity to break or a rear axle CV joint design issue that surfaces under heavy loads and rapid acceleration when the back end squats under acceleration.
