Looking in System Monitor I saw a process called geoclue-master. As far as I can tell, this reports my precise location to applications and the internet. This computer is sitting in the same office all the time so I have no need whatsoever for such a thing, and would rather have the memory and processor cycles that this unnecessary service uses up - however small - free for things that I do need and want.
I could not find instructions for disabling and removing this service so I renamed the file, but then the calendar disappeared from the notification area. Is there a way to remove this service but leave the calendar? I'm using 11.10.