Newsbin 6.52 build 3289 - but also observed on the current beta RC3.
Files download successfully, but only 20 entries are displayed in the downloaded file list.
If the list is cleared the next 20 downloading will appear and then stop at 20 again.
Reinstalling 6.52 as an upgrade doesn't change the situation.
This is very recent behaviour but I have done a windows 8.1 refresh recently. Cant think of anything else that's changed.
Regards
Ian