It's a hoax. Have a look here...
"Jack" <jackdonahuaol.com> wrote in message
news:0e8601c34630$34265dd0$a501280aphx.gbl...> I was informed of the presence of a virus in a persons
> address book. It was identidied as jdbgmgr.exe and I was
> told to search for it and delete it and then send the
> instructions to all of my address book. The program is
> identified, on my computer, as a microsoft originated
> program for registering Java debuggers. Is it a virus or
> is my instruction a virus.