Thinking about the G3 and wondering about the speed of the camera... I do understand that AF speed and accuracy play a role in shooting action, and that the Micro 4/3 system doesn't presently offer a quick native zoom, but please indulge a couple of basic questions from a photography newbie... I understand the G3 performs at 4 frames per second, and without looking it up, I assume that's the fastest full resolution rate yet achieved for the Micro 4/3 system?... is that acceptable speed for sports and kids?... is there a standard minimum frames-per-second rate that people look for when doing that type of photography(not talking professionally)? Also wondering if it's possible to raise FPS rate through firmware updates in the future, or is that an impossible upgrade? Thanks for the help.