Glueball,
you got a short memory.
Swissair MD11 went into the pond just 2 years ago or so.
SouthAfrican 747 went into the ocean when a cargo fire which had been burning for hours finally burned through the aircraft.
PANAM lost a 707 to a cargo fire, they almost made it the airplane broke up on downwind I think to Boston.
Lots more 3 and 4 engine aircraft have been lost to on board fires than twins have gone down from a failure of the second enigne (excluding fuel starvation or complete crew stupidity)
Bout time the standards were tightened as I was saying....
Cheers
WIno