11.4 Gnome and Gobi broadband asking for pin and password

I am running 11.4 Gnome 64 on a Lenovo T410 with Gobi wireless broadband. Irritating is that each time I start my computer I need to provide my pin and password. Does anyone know how to get rid of this?

Btw, for all other connections (wired and wireless) no password is asked.

Thank you very much in advance.