What year is your XF? Let me guess, an early build 2004? Some cars built before Dec 2003 are
the ones that were prone to the popping out of 1st gear problem?

How long have you had the car and how long has it been popping out of gear? They should have
fixed it the first time you took it in with no questions asked. It is a difficult issue to replicate... and
is well documented with a TSB out on the subject.

What are they going to do about the rear end noise?

I've had the transmission and rear end replaced on my car. Good luck with yours and let us know
how it turns out. And relax, it's only a car...