Same problem for me. I have DSL connection so I'm using pppoe. This way there are two devices (ppp0 and eth0) which have same bandwitch, and amount of data sent/received. In my opinion gnome-system-monitor shows sum of both ( doubles the figures). There should be some option to choose witch device to monitor.
It is nice to have actual figures in system monitor.
Same problem for me. I have DSL connection so I'm using pppoe. This way there are two devices (ppp0 and eth0) which have same bandwitch, and amount of data sent/received. In my opinion gnome-system- monitor shows sum of both ( doubles the figures). There should be some option to choose witch device to monitor.
It is nice to have actual figures in system monitor.