I'm using ubuntu 14.04, with gnome-shell.
I try to connect to a secure wi-fi network.
I enter my login and password, but no certificate -- I'm instructed by my university to ignore the warning (I know this is bad, but...).
Said warning appears (dialog entitled "No Certificate Authority certificate chosen"), but it is completely frozen. Neither the "Don't warn me again" checkbox, or the button react to my clicks. The window manager can not even close the dialog, I have to xkill it.
Does any know know of any workarounds or fixes for this?