I don't know how Kinko's public access is set up, but I have used "business centers" at several motels recently and all have a system of flushing all the files that have been created during the session when you log out of the system. That means each user starts out without cookies, preferences, etc. This is a good thing as it means the next user has no access, accidental or otherwise, to your personal information. Assuming the same is true at Kinko's would once again point a finger at cookies causing the difference.
You can, of course, set the browser(s) in your computer not to accept cookies which would keep your system free of the "global positioning" customization but it has the side effect of making many sites, especially online shopping sites, unusable if not totally inaccessible.
