I got this note from Lance in my comments, and after some confirmation, it looks like his experience isn't unique:
In response to: NewsMonster Lives
I tried installing NewsMonster, but it must have failed somewhere (did the Mozilla install). I also tried the Java install. Neither works, and now I get weird "cannot find a file" messages everytime I open a windo in Moz (like when I came to enter this comment).
I tried subscribing to the NewsMonster mailing list to look for help (as in, uninstalling the non-existant plugin), but that failed ... User unknown. And Kevin hasn't got a mailing list archive running on peerfear either. I'm screwed. Guess I could uninstall Moz and reinstall, but what a pain.
Posted by Lance
Urgh! Kevin! NewsMonster looks good! Get it together!