i used to stay in amanah as well as cendikiawan,
amanah u need to put things inside ur locker and lock kaw2..
if possible, bring your valuable items with u all the time,
the door knob has not been changed i think since even before i study there back in 2007...
yeah, i key can open many2 doors.. just keep trying all doors..

the buglar might not even aim for your room, maybe by luck only cos one key can open many doors..

what you can  do is report to the office.. or perhaps to najib. cos he used to help uniten a student before, saiful bukhari,..