My Mail application (Leopard) is sometimes incredibly delayed in downloading mail from the server. If I have Thunderbird open on the side sometimes I receive mail in it but have to wait 15 minutes before Mail gets it. Also, my iPhone gets the mail in time always, though one would think that the mail fetching system is similar to that in Mail. Does anybody else have this problem and know a way around it? It's really frustrating and I'm considering moving to Thunderbird for good.