URGENT: virus info

[redlines4us]

I read the info on this great site every day and came upon this thread about viruses. Can anyone help me. I'm not certain why this is happening: I have Eudora Lite email program. I also have Norton scanning my incomimg and outgoing emails. Just today I started getting the following message when I check my email:

(Yield Sign) There has been an error transferring your mail. I said:
PASS <shhhh! Don't tell anyone>
and then the POP server ([email protected]) said:
ERR connection closed by peer

I don't get the message every time. Just sometimes and then it asks me for my password. Password should be saved as always. I type in my password and it will let me check my mail a couple of times and then I get the same message again.
I tried to use my wifes email through her computer to send myself an email and I get it alright, but when I use my own email ([email protected]) and try to send myself an email, I can't receive it. Also when I use my account to try to send my wife an email, she doesn't receive it. Could this be some sort of Virus? Please help. Thanks! Bill Brown (redlines4us)