Hi there

Running a MATE session, you might encounter warning messages like this in your terminal when, for instance, updating via subversion: WARNING: gnome-keyring:: couldn't connect to: /tmp/keyring-*****/pkcs11

Apparently, gnome-keyring is only started if a session manager is started that supports this. E.g., running the MATE session manager on my Linux Mint Cinnamon install generates this error message, since "MATE" is not listed in the "OnlyShowIn" key of the "/etc/xdg/autostart/gnome-keyring-pkcs11.desktop" config file.

Just add "MATE" to the value of the "OnlyShowIn" key, e.g.: OnlyShowIn=GNOME;Unity;MATE

Original source: http://laslow.net/2012/05/06/gnome-keyring-issues-in-ubuntu-12-04/

Cheers, Peter