BlackSamurai,
Around dinner time, maybe between 7:30pm till about 8:30pm or so, I was in ONe Utama new wing, Chilis. I heard the loud boom and it actually vibrated the shop a little bit. So yeah, I'm confirming that I felt what you felt too. If it was lightning, the boom was rather strong. Never really hear that kind boom before from a thunder or lightning. Guess humans are changing the way the world's weather works.
drag addict,
Is it malaysian places that caused the sonic boom? If yes, I kinda feel doubtful cos I dun think our oh-so-clever govt will buy planes that can fly till sonic boom. But I DO NOT doubt that the govt can perform corruption, injustice and abuse of power till sonic boom. hahahaha