I also use mobile-broadband and am having exactly the same problem. Both the system-monitor and the panel-applet show no network-activity, even when I am downloading. This is actually a big problem for me because it makes it harder to diagnose network-problems.
I also use mobile-broadband and am having exactly the same problem. Both the system-monitor and the panel-applet show no network-activity, even when I am downloading. This is actually a big problem for me because it makes it harder to diagnose network-problems.