FWIW, United.com took Thrifty off its car rentals page on the trip planning tab.

And the double miles/Ual.com bonus is gone. Instead, there's this:

http://www.thrifty.com/Specials/united_triple.aspx

Starting Sept. 6, 2004, Earn TRIPLE
Mileage Plus miles with every Thrifty rental.
Book a mid-size or larger car for 3-7 days on Thrifty.com and we'll award you TRIPLE Mileage Plus miles with United Airlines. But here's the catch... you gotta pick it up by November 19, 2004 and you gotta book it here, on Thrifty.com. Book it now!



United Airlines is a Thrifty Partner
© 2004 Thrifty Rent-A-Car System, Inc. Thrifty.com is a trademark of Thrifty, Inc. All rights reserved.Offer valid 09/06/04 – 11/19/04. Rental must be booked on Thrifty.com. Mid-size or larger car only. Three-day minimum/seven-day maximum required. Restrictions may apply. This offer valid for U.S rentals only.