Battery failure in the Rx-8

On two occassions now in my 3 month old Rx-8, the battery has failed to start the car. The addition of LoJack is being blamed. The dealer wants to remove the LoJack. At first they blamed the radar detector which has since been disconnected. Anyone else had a similar problem and do you believe it?

of course, all that stuff just sucks the battery life away, and quick.

Anything with a small draw will kill the battery. LoJack will kill it as well.
How often do you drive your car? Do you leave it sitting for long periods of time? If so then that would most likley be your problem.