My CC does it all the time... sometimes it happens, sometimes not... what I do (which usually works) is to move the seat back manually (with the seat tilted backwards) and try again. Usually it moves forward on its own, then back as if nothing. Happens to both driver and passenger seats.
I would say it's Italian temperament... got to love Italian electrical/electronic gear. Another 1 is the NIT CD loader. Load a CD, plays fine. Stop the car and go for a leak. Turn on the ignition, the NIT flares-up, but the CD wont start (you can see the track # and everything else fine, but CD won't spin... dead frozen). Eject. Re-insert. Back to business.
Despite the annoyance, I'd better touch nothing.
Exotica... that's the reason!