At SYD: I experienced FOUR security checks at Sydney, for a flight to LAX. First, at check-in ALL passengers were taken out of line for a bag search. Second, the standard security checkpoint with metal detector. Third, the gate was walled off with the temporary wall dividers and a check was made of ALL carry-ons as you entered the gate lounge. Fourth, a pat down in the jetway just before entering the aircraft.
At BRU: I experienced THREE security checks at Brussels, for a flight to IAD. First, I was randomly selected to be taken out of the check-in line for a full, thorough bag search. Second, the standard security checkpoint with metal detector (further taken behind a curtain for a pat down). Third, a checkpoint midway to the gates, as the American carriers were isolated at the farthest end of the concourse to provide this extra security.
I hate osama bin laden.