Just so you guys know, now that you're all a bit more paranoid, there is a thread about the jacking points used by the factory.
Using Jack Stand...where to contact point?
Just note, spearfish did it correctly using the factory points, simply that he did not note his treated floor would cause the car to slip.
Had a similar episode where an old race jack (which no longer was able to lower a car slowly) almost crushed my leg under the front bumper. Remember, this is why jacks need to be replaced or rebuilt!