I'm going with my theory...
Plane is cruising at around 40,000 feet @ at around 500mph over the ocean. It suffers a catostrophic structural failure (possibly due to an explosion)
The plane disintergrates in 100,000 tiny pieces and is they are scattered over a 50-100 mile radius. Most of them parts ~95% sink without a trace. The rest are floating around waiting to be discovered in a year-2 years time.
If it was an explosion, then again possibly intensional, but from a loaner (with an accomplice?) wanting to go somewhere other than the planes original destination.
Al-Quaida will be desperately trying to find a link between the the dissapearance and themselves to claim responsibility.
Other than that a tragic accident and my thoughts go out to the family & loved ones of the lost.
Don't believe the media hype, they have to sell news