Hello Janicec
I have flown with Malaysia Airlines on two separate occasions and found them to be perfectly ok. From what I understand neither incident was to do with the actual airline or aircraft but circumstances beyond their control, as Monty said it could have happened to any airline. I always look at it from the point of view, people will readily jump in their car every day and think nothing of it, but more accidents happen on the road every day than they do in a aircraft in a year.
Have a great holiday, the flight will be well worth it.
Avocet