These never go away, so after several ssh logins, I see many of these keyring instances in my process listing. I don't see the same behavior if I login to the computer directly. However, if I start Gnome desktop, I see that gnome-keyring-daemon gets started with the "--login" flag. This instance closes when I stop my Gnome session.
I can occasionally kill all these processes by hand, but I was hoping that someone might know how to keep this from happening in the first place.