>Addendum- MS is indeed planning a fix... see http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1179601&SiteID=1 ... the response from MS is at the end of Page 1 plus several useful responses on Page 2.
>

Another interesting, and I think, more complete analysis here
http://oakleafblog.blogspot.com/2007/04/entity-change-tracking-in-linq-to-sql.html