Yes, completed installations on two laptops.
Install of the basic Win7 is slightly faster than Vista or even XP in about 45 minutes. Then with the install on additional software like Office, Google Toolbar, etc & numerous Windows Updates extends the total time to around 5 hours.
BTW I've noticed a couple of small differences between the full edition and the RC edition that I've been using for the past months. Maybe caused by the install sequence of those additional components.
Does this help?