well, I fixed the problem to my satisfaction.
My aim was simply to be able to use 'unsafe storage' in MATE. I am aware not every wants to (or even recommends
) using it, but I have since I started using LMDE with zero problems.The fix was quite simple.
1. Un-install 'mate-keyring'
2. Un-tick the 4 MATE related keyring apps
from 'Startup apps' (Keep the 4 duplicate GNOME keyring apps selected).
Seahorse now looks like it should
And 'unsafe storage' is back working. I dont have to enter my password 645+
times a session.