@pylon: And you are probably correct, but 2 seconds is too long. That is an eternity.
@mother: Just out of curiosity, does all the data you sent get through? It just gets there in one big clump, is that it? Can you see how many packets it is sending every 2 seconds? A few or one big one?
I don't use the wifi shield. I use the ethernet shield connected to a Mikrotik router with a wireless card. Very speedy!