D.S. - Put yourself in the Malaysians position. This is their 9/11. They have never had to deal with anything like this before.
MAS has an excellent safety record, they're not African cowboys, despite the occasional laxity in procedures.
They're obliged to hand out some info, they're no doubt working with conflicting basic data that has to be analysed and re-analysed to ensure erroneous information is discarded.
They have to give some hope to the relatives, whilst not giving away crucial investigation lines that often involve military secrecy. It's kinda like tight rope walking, but with no end to the rope.
I don't envy them, particularly when you consider the amount of skill in planning and deceit, that went into this disappearance. It's unparalleled in the history of aviation, or any other transportation field, for that matter.
The additional horror will come when the lawyers start, and when MAS goes under, due to the run-on effect of this event on its image and revenue.