I know you've already gotten rid of it, but I'd really question if the dealership actually did the transmission service 6 months ago. I have heard problems regarding the 01-02 autos (planetary gears), but the only cases I've heard are people who have towed heavy trailers or wheeled it hard. Well, I guess you've already made your choice and with a new car now. Good luck with the new ride.
I am with you and since I have been using them from 1st service - who knows how many of 5 transmission services I paid for actually happened. Lesson learnt and I'll be checking the fluid colors after service in future (although I think transmissions on the newer models don't need servicing).