Hey there Ian,
It was a (rather lengthy) process of elimination - I jumped into IIS and shut down everything a bit at a time. We also had Apache server, so I shut it down in case there were any conflicts. In shutting those things down, stuff like McAfee ePO and Microsoft's WSUS were all shut off. However, still no luck. So then I started going through my Services and stopping them. When I saw the Oki PrintSuperVisor it jumped out at me because I remembered it had been installed just about a week ago, which I thought was roughly when the problem started.
I literally had Event Viewer open as I was doing this and would just refresh it after each minute to see if another stop/start cycle had been logged. When I shut down PrintSuperVisor suddenly IIS didn't stop! I was a very happy camper!!
And if you get any answers from Oki, I'd be keen to hear.
Cheers,
Philip
Philip Brookes
Director
Aktiv Tactics
www.aktiv.com.auPhone 1300 85 70 75 / +61 3 9017 2996