I posted this question in the Virus & Security Alerts forum. As far as I know, no one there has had any problem getting their Yahoo email.
On September 19, 2005, I stopped receiving any Yahoo email, although I am able to log in and send out email without any problem. As a test, I sent email from my Yahoo account, which were received at two other email accounts I have.
I sent Yahoo customer service an email, but they haven't replied yet.

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