I had the same problem and found following solution:
1. Go to System -> Preferences -> Startup Applicataions
2. Find Item: “Certificate and Key Storage” and edit it
3. Change command to: “gnome-keyring-daemon” and save it.
4. Reboot
NOTE: After upgrade from 9.10, there was following command: “gnome-keyring-daemon –start –components=pkcs11” which caused some error message. After the change mentioned above, it started working properly.
Found under https://bugs.launchpad.net/ubuntu/+source/seahorse/+bug/553032/comments/8