I've previously used Mail 3.6 on my Powerbook and I could click "Get Mail" in the upper left corner to instantly receive my mail. However, on my new Macbook Air, it seems to take a lot longer to receive new mail. In fact, my iPhone gets it instantly, but Mail takes a few minutes longer than my iPhone, even with the preference set to "Receive every 1 minute" or "Manually" or when I click the upper left button incessantly. So why does it take so long to receive my mail?? What settings do I need to change?