.064s
That puts it about even with the 30D in terms of shutter responsiveness and slower than the 40/50D. So, a bit of a step backwards for action shooters in this respect.
Note: D300 shutter lag time = .045s, which puts it in the same league as the 1DmkII/1DmkIIn...
Edit: I have changed the line above to reflect the Nikon D300, as I originally intended. Sorry for the confusion .