Thank's..Sorry, you are right, its not a bug. I just understand the use of the "copy(master)" on the HelloWorld-AE example. About not closing an application, just a simple question: ... is not consuming more memory on the device?. Why I should leave HelloWorld-AE paused in the background?
Edited:
By the way, calling System.exit(0); on the onStop() method, !solves! the emulator's Fatal signal 11 (SIGSEGV) error