Just downloaded a variation of this as
stuff.MP3.pif from someone I don't know. Appears to be the newest variant.
Info Link.
Fortunately, I don't use the preview pane. I was curious what the message was, so I opened the message and clicked cancel on the "save or open" dialog box so I could see the filename.
My registry is clean.
I've been using the net since 1996 and have never been infected by a virus. And I have never ran resource hogging anti-virus software which isn't updated fast enough to catch the fast-moving threats.
If you do these, you won't get a virus:
1) Don't open
any executable attachments.
2) Don't open any attachments you aren't expecting.
3) Don't use the stupid preview pane.
4) Don't let other people fool with your system (they can plant trojans if you are too smart to download them)