Is the JellyBean's life cycle different from other versions please ? I have a report from one user that for some reason returning from the PreferenceActivity's screen won't return to the main activity screen but loops to the PreferenceActivity screen.
Till tomorrow I won't be able to test and fix this and I never noticed this with previous Android's versions.
Thanks Erel. Yes, a really simple sample app is available under my freeware account :
Each time the app is started it loads the main layout and then displays the PreferenceActivity's screen (first sample image on the store). A back key returns to the main layout (second sample image on the store).