Last weekend, I left in my computer system in a disassembled state and went out of town for the week. Upon returning and putting my computor system back together, I found three(3) Emails that had been returned to me as undeliverable. Ok, until I looked at the content of the returned messages. First, they were sent to people I don't know, and more importantly, the dates they were sent (from my address) were during the period I was out of town, and my system was down. The unknown names issue sounds like a virus, but how could this have happened...