I found this part interesting
Similarly, Italy's foreign ministry confirmed that no Italians were on Flight 370, even though an Italian was listed on the manifest.
On Saturday, Italian police visited the home of the parents of Luigi Maraldi, the man whose name appeared on the manifest, to inform them about the missing flight, said a police official in Cesena, in northern Italy.
Maraldi's father, Walter, told police he had just spoken to his son, who was fine and not on the missing flight, said the official, who is not authorized to speak to the media. Maraldi was vacationing in Thailand, his father said.
The police official said Maraldi had reported his passport stolen in Malaysia last August and had obtained a new one. But U.S. law enforcement sources told CNN that both the Austrian and Italian passports were stolen in Thailand.
most likely what caused the missing plane is whoever stole the passports, or it could have simply crashed...
I find it hard to believe that you can just loose a plane though... One would think that now days planes would be required to be equipped with a tracking device of sorts, kinda common sense to do that if you ask me...