For the past day I've been getting return emails from MAILER-DAEMON saying my email to so and so is undeliverable, some of them say due to virus. I do not recognize the email addresses listed in the return, nor the name of the file in one of the emails (document_9446.pif). I updated my Norton AntiVirus today and did a full scan, but found nothing. I've had no responses from people saying I've sent them anything, but I'd really like to get this squared away. Anyone have a suggestion? I did a computer search for that file and found nothing in my computer.
I did a websearch for that file name and found this:
http://www.messagelabs.com/viruseye/info/default.asp?frompage=virus+information&fromurl=%2Fviruseye%2Finfo%2Fdefault%2Easp&virusname=W32%2FSobig%2EF%2Dmm but I certainly have not downloaded anything sent from someone if I didn't recognize it or if it seemed suspicious. I HAVE used Kazaa about 20 times in the past week though.

I did a websearch for that file name and found this:
http://www.messagelabs.com/viruseye/info/default.asp?frompage=virus+information&fromurl=%2Fviruseye%2Finfo%2Fdefault%2Easp&virusname=W32%2FSobig%2EF%2Dmm but I certainly have not downloaded anything sent from someone if I didn't recognize it or if it seemed suspicious. I HAVE used Kazaa about 20 times in the past week though.