That is incredibly unfortunate.
I know for a FACT that ALOT of stuff on the LDS family trees is outdated and old, and often quite wrong.
For example, my great great uncle and my great grandmother started their family's genealogical research in the 1940s-1960s. While it was a great start, there were some HUGE factual mistakes they made due to the difficulty in getting primary sources back then. My grandmother tirelessly researched and realized many crucial mistakes, and spent years trying to convince distant relatives that the "old" research was wrong. Even TODAY, some of those wrong pedigree charts are STILL on Ancestry.com, uploaded by the decendants of those people, without ANY proper documentation. The LDS trees suffer from stuff like this...and I cannot believe that Ancestry.com uses them as primary sources.
Well, I still hope someone from Ancestry.com will post here, but my hopes are dropping like a rock...*sigh*