try to "Reset" the groups, and then re-download the headers.

"Jim Shaffer, Jr." wrote in message
...
On Yelena, I'm not getting any new messages in rec.radio.shortwave and
sci.astro.amateur. There should definitely be new messages, because I
haven't
downloaded any since last evening. All other groups I've tried so far
have what
appears to be a normal number of new messages.