QUOTE(Mollai @ Sep 27 2011, 09:09 AM)
I'm still very new with this phone. Don't know what is root, kernel, what flashing, kies, etc. >.<
Updates on my problem with my S2, it gets hanged. The screen totally down. Pressed back button but not working. I had to press the middle button to get out and used task manager to end the program. Anyone have this problem too?
Haih..I still can't disable my camera shutter sound.

So I must do rooting is it??
Will rooting bring me other problems?
have you updated your phone to the latest firmware via Kies?
before you root, please bear in mind that root will void your SME warranty. but, as mentioned by other user, if you are lucky, the SME technician wouldn't bother to check whether your device was rooted or not.
please go through the 1st page of this thread. it will helps a lot..no need to do other research yet coz it will get you confuse. just read all the items in 1st page...