🚀 go-pugleaf

I just started up NT-NewsWatcher on my Airport+DSL-connected MacBook a 
few moments ago, noticed that the "?"'s in front of the 26 groups in my 
Subscribed Groups window were only very slowly turning into numbers of 
new messages, but also observed that the activity light on my DSL modem 
was flashing like mad. 

So, I started up Activity Monitor (which I don't normally keep running), 
and selected the Network Tab.  The  text at the bottom of AM's window is 
showing "Data Received: 93 MB" and climbing steadily; the green line in 
the little window to the right of that is pegged at the top of the 
window and the text says "Data received/sec" is about 40 kB (which might 
be about right for our very marginal DSL connection).

So, how can I tell _where_ this data is going on my HD, or who's sending 
it to me?

And, I started up Activity Monitor cold, and the 93+ MB can't possibly 
have come in since I started it.  From what starting point does Activity 
Monitor measure Data Received? -- and does it somehow keep track even 
when it's not Open?

[In the time it took to compose this msg, the Data Received has climbed 
to 120 MB . .. ]