People, once you get to a newsgroup, click on 'all years' to see which years are in the archive, and select which year you want. Don't expect posts from last millennium to be present, at least not yet.
At the time of my comment, 2003 was the oldest year present for the group(s) i mentioned. I searched for a FAQ before posting, it's not clearly marked "imports are still in progress". Please don't be condescending, OP specifically stated "ask me questions." You are not OP.
Edit: I am now on a desktop, and confirm it's not a mobile glitch; the archives for comp.os.linux are imported back to 2003 only at this time. https://www.usenetarchives.com/threads.php?id=comp.os.linux&...