From package gnome-keyring - 2.26.1-0ubuntu1 (13 Apr 2009): "DBus now automatically starts the gnome-keyring service properly."
xfce4-session should not try to do the same on session opening.
From package gnome-keyring - 2.26.1-0ubuntu1 (13 Apr 2009):
"DBus now automatically starts the gnome-keyring service properly."
xfce4-session should not try to do the same on session opening.