You don't have the virus until you open the att.
If you open it Norton will stop and tell you.

"belfry" <belfry@insightbb.com> wrote in message
news:aGRbb.131260$mp.66667@rwcrnsc51.ops.asp.att.n et...
> I have been getting the fake Microsoft Update and "returned" e-mails
exactly
> like the the Swen virus, but I have downloaded from Symantec and others
> their scanning program and ran it. And they all say I do not have the
> Win32.Swen.A virus. Yet I still am being bombarded with these "returned
> messages" and MS Update notices, all with that 106K size attachment!
>
> Even F-Prot says my coimputer is clean. Can someone help?
>
>