I have problems too with my Comcast mail. Be sure that your Default in Vista is the correct email, and that the 2 settings are correct. I'm not at home, but the settings are for incoming & OUTGOING. I think they are POP & STMP.Even with mine set correctly, the Vista mail acts differently than if I go off the Comcast Home Page. It's a pain. The only time I need the Vista one is when I want to send a picture that's in a email, or a picture from elsewhere from the pc. When I check my email remotely from the Home Page, I DO NOT get the same things as on the home pc, ie, folders of mail sent, jokes saved, etc.