[Evolution] possible virus?

[Tom Weingarten <captaint comcast net>]

I've encountered a strange problem just recently with evolution. The
other day person A, who is not on my contact list but has sent me
emails, recieved an email from person B, who is on my contact list,
containing the body of an email I sent to person C in January, which is
stored locally on my computer, and the subject was "I love you too!!!".
Person B or C know eachother, but neither has ever had any contact
whatsoever with person A, so I assume that either I have a virus or my
ISP itself does, which seems almost impossible. Can anyone offer me help
as to what this may be? Thank you in advance.

,Tom Weingarten
captaint comcast net