Server 2003: WMI issues - WMI initialisation failure.

Hi,

I've got a few issues with WMI provider that I first noticed when it had
problems with backup. It looks like a reboot hasn't fixed the issue so It
seems I'm going to have to fix it the hard way.
I'm getting WMI: Initialisation failure if I try to display any dependies
for any services or if I try and get properties of WMI control (in computer
mgmt console)

I don't know much about WMI so I'm unsure if I'm going to need to have an
outage to fix it.

Does anyone know how to fix this sucker?

Cheers,

Tim