Dchoung over at TabletGear links to a story about a Toshiba M4 that had a glass table shatter under it. Perhaps the glass table was not designed to have something as substantial as the M4 sitting on it 
Seriously though - the high end Toshibas have quite a few features hidden away that will increase their chances of surviving such a fall. These include shock mounted drives, cruple zones in the case and an accelerometer that can detect the fall and park the head of the drive before it hits the deck. Had it it the floor there is a good chance it would have been OK.