Ok, just got the car back. Turns out the center brake light is not an LED, but it *is* covered by the warranty. Hooray!
They basically shrugged their shoulders about the other two lights burning out and said it was a coincidence. Oh well!
Anywyas, all is working again, and for once avoided dropping a ridiculous sum of cash at the dealership. That makes me happy.
Fingers crossed that the bulbs stay lit. Thanks to all who responded.
-Chris