Today, I tried to fix a leak in my newly created iPhone app. After some search, I've discovered that Apple has a leak in it's Tab Bar application template. Have you discovered the same, or am I wrong?
I think I remember people asking here about leaks where it turned out that the application only leaked in the simulator, not on the actual device. Can you observe the leak when running your app on an iPhone or iPod Touch? If it only occurs in the simulator, I wouldn't worry.