I received one of these today and did get notified. I found that there was an old one that I did participate in and one that I didn't and never received notification. I couldn't find that one when I clicked on the Conversations envelope icon by my user name at the right of the top tool bar. Do I have to allow notifications for these "private" conversations as opposed to the plain Conversations? Didn't realize there are two types (or more?) of conversation. Is there? Maybe I just need a Snickers? 