Love the IPhone E Mail, but am wondering if anyone else has experienced this: More often than not, when I'm in the field and not using WiFi (and have a lot of bars), and I check for new E Mail, the "checking for mail" just grinds and grinds and grinds...eventually giving me a "can't connect with server" message or just quitting the check and showing the time and date of the last successful check for mail. Any suggestions? Also I don't have the "push" feature on; the phone is set for manual checking for E Mail...comments? It that the best way? Thanks!