Okay, I've got some screenshots and uploaded them to our web site.
WGIC enabled on bootup
As you can see, quite a few autorun items have kicked in like the eBay toolbar utility. If I then surf the web after this, my entries are shown against DEV007[System]. They never show against DEV007[Rob Nicholson]. I'm guessing that the SYSTEM account is the first thing on boot-up that accesses the web (updates and the like) and therefore this account is sticking.
WGIC disabled on bootup
However, if I disable WGIC, reboot, enable WGIC and then go to the web, the authentication is done against my own account. It shows [DEV007]Rob Nicholson
Therefore it's going to be difficult to do things on a per-user basis as it's currently authenticating as a per machine.
Thanks, Rob.