In one single day I had to deal with two nasty tricks to get the following e-administration to work properly:
sudo apt-get install nspluginwrapper<br />
sudo nspluginwrapper -i /usr/local/lib/personal/libplugins.so<br />
On the other hand, the spanish counterpart, complained like this:
"Su certificado no ha permitido generar una firma válida"
Pasting the error on google sufficed to find the solution as well.
Now I wonder how our mums can cope with these big user annoyances :-S