Likely all your machines came from one image, so they all have the same WSUS
ID.
This article explains how to fix:
http://support.microsoft.com/kb/903262/en-us
"Michael McFarland" <Michael
> wrote in
message news:51F41EE0-5E9C-4B45-B382-...
>I am using WSUS on SBS 2003.
>
> When viewing the WSUS console, I can only see the server and one
> workstation. As I go to each workstation and force a detect, it shows up
> in
> the console replacing the previous workstation. I can go back to the
> first
> workstation and run the detect again. the old workstation appears
> replacing
> the new. What is going on here? I have already verified group policy and
> membership.