If you get a password prompt like the following when logging on to Gnome on Ubuntu Linux your login password might differ from your keyring password file (
An application wants access to the keyring 'default' but it is locked.
So to get arround this and have the default keyring unlocked when logging on, run
seahorse (Found on the menu via System → Preferences → Passwords and Encryption Keys), right click on the keyring and select
Change Password to set it to your login password.