How can I fix my gnome keyring?

I am using Trisquel version 7 (Belenos), which is based on Ubuntu, with the LXDE desktop environment. It seems to be using the gnome-keyring-daemon to store and remember passwords; however, it doesn't seem to be working properly. For example, when I open Evolution mail, I am prompted for my e-mail/calendar/address book passwords, and then I am asked to give a password for a 'default keyring' to store them. However, the 'default keyring' doesn't seem to persist - I get asked the same questions again and again every time I start Evolution. I read the man page for gnome-keyring-daemon, but it didn't to help a great deal in explaining how it works. Does anyone know what the problem might be? **Edit:** Just to add, I tried removing and then re-installing the gnome keyring package and the problem was still there. I will try doing a 'complete removal' and see if that helps, in case there are some broken config files hanging around.