Has anyone else been getting responses (e-mail notifications) to threads that their subscribed to or PM's and it's for something old with no edits or anything
I've gotten a couple and can't figure out why I'm getting them

I get a notification of a PM go to my inbox and nothing new. I've also gotten replies on a topic I'm subscribed to but there are no new posts or even edits
Am I missing something or is there something flaky going on.....