I've been, off and on, trying to figure out what was wrong with digest 
mode on Gamehawk. I just wasn't getting digests, the live code only runs 
once a day (which makes debug cycles kind of long), and I didn't have time 
to set up a fully separate test site. And I couldn't see anything wrong 
with the code, and I knew it *did* work when I had a fully separate test 
site.

And then I realized my test list was Celandra, which, um, isn't served by 
the Gamehawk daemon.

So anyway, there actually isn't anything wrong with digest mode, other 
than the current release doesn't support changing your subscription mode, 
either on the web or via the majordomo-alike. (Details, details.) So I'm 
currently polishing up the new release, and then I'm going to start 
converting the rest of the lists, which will mean we can shut down the 
really-old server (Firehawk is dependent on MySQL, which we haven't 
installed on any of the new servers), and move everything to the colo 
server. (Yay bandwidth! Yay backup power!)