My apologies! This weekend, I upgraded the module that sends out notices to folks who have "subscribed" to particular discussions. It has a whole new set of options and, without much thinking, I checked a box that automatically sent notifications to you of any replies to comments you'd made. This is a reverse of the way UH used to work (before, you had to click a link to get such messages). I've turned off that option. However, if you're still getting these notices, and don't want them, let me know and I'll shut them off by hand for you (and feel free to express your displeasure by forwarding them all to me).