Speaking of warped rotors...
I was flagged once at thunderhill during an "off session"; I wasn't able to take a cool-down lap and had to pit. After I parked the car I walked out and noticed my rotors were SMOKIN

Nice big plumes of smoke coming out of my wheels. Needless to say I jumped in quick and drove around the parking lot for a good 5 minutes to cool the rotors down.
Shingo