Bingo. I stopped the service, the logging in has stopped. Will have to see what impact this has on stuff like ILO, the health monitoring of the host in Virtual Centre, etc and decide whether we can disable it permanently.
We only use ILO for remote management in the event of a problem with the host and dont use it to scrape alerts out or anything so... I don't think it'll be a big loss for us.
Thankyou!