I don't know if anyone on here has AOL as an email provider, but if you do, and are experiencing trouble getting updates on thread notifications, it is something of an issue. I had to start using another email provider because all the notifications went from being late and out of order to just plain stopped. Now, I still have AOL because I can't for some dumb reason give up an email address I've had forever, but I forward the updates from gmail to AOL.
Also, I wrote to AOL on their feedback address and told them to Allow BYC on their whitelist so we can get the updates. For some reason AOL blocks them and they do not even appear in the spam folder.
OK, my public service announcement for the day is complete...