So, I've noticed over the past months that I'll periodically find myself unsubscribed from a few threads here and there. I can't quite pinpoint the circumstances that make it happen. And it doesn't happen all the time, maybe only 10% of the time.

But I've found myself unsubscribed from threads I've been posting to and following. I've even found myself unsubscribed from threads that I started.

The threads will stop showing up in my list of subscribed threads, but I'll see that they've been posted to when I click on "new posts" and sure enough under thread tools it will give me the option to 'subscribe' to the thread that I had already been subscribed to.

So any idea what's causing this to happen and what can be done to prevent it?