MH370: New Inmarsat data narrows missing airliner's flight path.

Inmarsat today has said the ping timings increased in time. Seems to me like they have been the only ones providing reliable data all along.
According to them, in order for the pings to have increased in time it could only have gone north (passing through countries radar) or south through Indonesia (passing through a countries radar).
They say it is not possible for them to have traveled over the open ocean and then turned south like has been thought up until now.