I've read enough about W32.Klez on some of the web sites to be generally familiar with it, but I'm wondering if anyone has found answers to the following:

Does a line in the full header of an infected message show the address of the source of the infected message? (For those newbies unfamiliar with this, I mean the "return path" source shown when you right click a message in the inbox and choose "options' in Outlook or "properties" in Outlook Express.) I know that the address in the "From" line of Klez-infected messages is normally either another address found on the infected machine or chosen from a list of random addresses.

It sure would be nice to know whose machine these are really coming from.