> Could you edebug nnmail-article-group to see if nnmail-split-fancy
> is somehow invoked without narrowed headers?

It doesn't get tripped if I 'B q' having started Gnus, only while mail
is being slurped in.  This makes it a little harder to debug.  :-/

-- 
David Maze             dmaze@mit.edu          http://www.mit.edu/~dmaze/
"Theoretical politics is interesting.  Politicking should be illegal."
	-- Abra Mitchell