As some have noticed, the list engine has been backlogging posts to the list today; in some cases, email hasn't been sent out until 60-120 minutes after it was received.
I'm sorry about this. I think I've identified the "feature" of mailman that was causing this, and changed it. When I tested my mailman to see if it could cope with the toasters traffic, I didn't anticipate seventy posts in a single day.
The backlog is being rapidly processed, and we should soon have caught up.