(continues) even the "about:" (About Firefox page) doesn't work. 2. The "setting" from the menu bar keep staying grey and I can't access it; no addon has been loaded into the menu bar either.

But the strange thing is I can start a new guess session (it didn't grey out), and everything works fine on that particular session.

I have a Galaxy SII (4.1.2) running a new installation of Aurora 28.0 and am not seeing any problems. Can you try wiping application data and cache and starting from a new profile and comment back here if you see the same problem again?

Well, I did exactly that after a few more attempts trying to make it work.