I just got off the phone with Yahoo's customer service (408-349-1572) and was told that it is a known problem (the inability to log in to e-mail), the technicians are working on the problem and it should be fixed soon. How soon, I don't know. Everyone that's having problems with their Yahoo e-mail should call them. It will help resolve the problem faster.

I FINALLY got into my Yahoo e-mail last night.