That's definitely the sort of program I wanted. What it's telling me, however, it not what I was hoping to see. Here's a usage trace (on my 100Mb wired Ethernet):


Yet, according to X-NetStat (and, consistent with what TDImon was saying), the "bytes in" and "bytes out" columns are all zeros. Does this mean that I'm receiving a stream of packets that my machine is reporting but just quietly ignoring?