I am not sure if I have a problem on my computer, or if something funny is going on in newsgroups. When I first select the newsgroup 'folder' in my Netscape, it pings the news server and gets the number of new messages in each group. Then, when I select each group, it downloads the message headers for that group.
Lately the number of message headers it downloads is only a fraction of the number of new messages it said were there. That fraction is about a quarter. Today it said there were well over a hundred new messages in rms. But it only downloaded 34 headers. This seems like a very low amount of traffic for rms. Also, sometimes I have not seen my own posts, though I get email about them, indicating some people are seeing them, even if I didn't.
I am using a fairly old version of Netscape, but also have a fairly recent Mozilla, and that does the same thing.