Take a look at this recent NY Times story of 09/28 which references the TSB and the driveshaft problem:
http://www.nytimes.com/2008/09/28/automobiles/28TSB.html?_r=1&em=&pagewanted=print&oref=slogin
This should help folks with a point of reference for service techs that play dumb.
Good info.....